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  Subjects -> ELECTRONICS (Total: 179 journals)
Showing 1 - 200 of 277 Journals sorted alphabetically
Acta Electronica Malaysia     Open Access  
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 7)
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 5)
Advances in Electronics     Open Access   (Followers: 78)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 8)
Advances in Microelectronic Engineering     Open Access   (Followers: 13)
Advances in Power Electronics     Open Access   (Followers: 33)
Advancing Microelectronics     Hybrid Journal  
Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 315)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 24)
Annals of Telecommunications     Hybrid Journal   (Followers: 9)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 9)
Archives of Electrical Engineering     Open Access   (Followers: 13)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 8)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 28)
Bioelectronics in Medicine     Hybrid Journal  
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 19)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 36)
Biomedical Instrumentation & Technology     Hybrid Journal   (Followers: 6)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 12)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 1)
Bulletin of the Polish Academy of Sciences : Technical Sciences     Open Access   (Followers: 1)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 47)
China Communications     Full-text available via subscription   (Followers: 8)
Chinese Journal of Electronics     Hybrid Journal  
Circuits and Systems     Open Access   (Followers: 15)
Consumer Electronics Times     Open Access   (Followers: 5)
Control Systems     Hybrid Journal   (Followers: 269)
Edu Elektrika Journal     Open Access   (Followers: 1)
Electrica     Open Access  
Electronic Design     Partially Free   (Followers: 105)
Electronic Markets     Hybrid Journal   (Followers: 7)
Electronic Materials Letters     Hybrid Journal   (Followers: 4)
Electronics     Open Access   (Followers: 86)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 10)
Electronics For You     Partially Free   (Followers: 92)
Electronics Letters     Hybrid Journal   (Followers: 26)
Elkha : Jurnal Teknik Elektro     Open Access  
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 51)
Energy Harvesting and Systems     Hybrid Journal   (Followers: 4)
Energy Storage Materials     Full-text available via subscription   (Followers: 3)
EPJ Quantum Technology     Open Access  
EURASIP Journal on Embedded Systems     Open Access   (Followers: 11)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Foundations and Trends® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Signal Processing     Full-text available via subscription   (Followers: 10)
Frequenz     Hybrid Journal   (Followers: 1)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 1)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 191)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 4)
IACR Transactions on Symmetric Cryptology     Open Access  
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 97)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 77)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 46)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 9)
IEEE Journal on Exploratory Solid-State Computational Devices and Circuits     Hybrid Journal   (Followers: 1)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 66)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 70)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 56)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 19)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 40)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 19)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 26)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 71)
IEEE Transactions on Signal and Information Processing over Networks     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 5)
IET Cyber-Physical Systems : Theory & Applications     Open Access   (Followers: 1)
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 35)
IET Nanodielectrics     Open Access  
IET Power Electronics     Hybrid Journal   (Followers: 46)
IET Smart Grid     Open Access  
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 18)
IETE Journal of Education     Open Access   (Followers: 4)
IETE Journal of Research     Open Access   (Followers: 11)
IETE Technical Review     Open Access   (Followers: 13)
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems)     Open Access   (Followers: 3)
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 58)
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 24)
Informatik-Spektrum     Hybrid Journal   (Followers: 2)
Instabilities in Silicon Devices     Full-text available via subscription   (Followers: 1)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 13)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 18)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 10)
International Journal of Antennas and Propagation     Open Access   (Followers: 11)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 5)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 6)
International Journal of Control     Hybrid Journal   (Followers: 12)
International Journal of Electronics     Hybrid Journal   (Followers: 7)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 13)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 2)
International Journal of High Speed Electronics and Systems     Hybrid Journal  
International Journal of Image, Graphics and Signal Processing     Open Access   (Followers: 14)
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 8)
International Journal of Nano Devices, Sensors and Systems     Open Access   (Followers: 12)
International Journal of Nanoscience     Hybrid Journal   (Followers: 1)
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 4)
International Journal of Power Electronics     Hybrid Journal   (Followers: 24)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 4)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 10)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 4)
International Journal of Wireless and Microwave Technologies     Open Access   (Followers: 6)
International Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
JAREE (Journal on Advanced Research in Electrical Engineering)     Open Access  
Journal of Biosensors & Bioelectronics     Open Access   (Followers: 3)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 10)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 4)
Journal of Computational Intelligence and Electronic Systems     Full-text available via subscription   (Followers: 1)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 24)
Journal of Electrical Bioimpedance     Open Access   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 7)
Journal of Electrical, Electronics and Informatics     Open Access  
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 7)
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 8)
Journal of Electronic Design Technology     Full-text available via subscription   (Followers: 6)
Journal of Electronics (China)     Hybrid Journal   (Followers: 4)
Journal of Energy Storage     Full-text available via subscription   (Followers: 4)
Journal of Engineered Fibers and Fabrics     Open Access  
Journal of Field Robotics     Hybrid Journal   (Followers: 2)
Journal of Guidance, Control, and Dynamics     Hybrid Journal   (Followers: 168)
Journal of Information and Telecommunication     Open Access   (Followers: 1)
Journal of Intelligent Procedures in Electrical Technology     Open Access   (Followers: 3)
Journal of Low Power Electronics     Full-text available via subscription   (Followers: 7)
Journal of Low Power Electronics and Applications     Open Access   (Followers: 9)
Journal of Microelectronics and Electronic Packaging     Hybrid Journal  
Journal of Microwave Power and Electromagnetic Energy     Hybrid Journal  
Journal of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 10)
Journal of Nuclear Cardiology     Hybrid Journal  
Journal of Optoelectronics Engineering     Open Access   (Followers: 4)
Journal of Physics B: Atomic, Molecular and Optical Physics     Hybrid Journal   (Followers: 28)
Journal of Power Electronics & Power Systems     Full-text available via subscription   (Followers: 11)
Journal of Semiconductors     Full-text available via subscription   (Followers: 5)
Journal of Sensors     Open Access   (Followers: 26)
Journal of Signal and Information Processing     Open Access   (Followers: 9)
Jurnal Rekayasa Elektrika     Open Access  
Jurnal Teknik Elektro     Open Access  
Jurnal Teknologi Elektro     Open Access  
Kinetik : Game Technology, Information System, Computer Network, Computing, Electronics, and Control     Open Access  
Learning Technologies, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Magnetics Letters, IEEE     Hybrid Journal   (Followers: 7)
Majalah Ilmiah Teknologi Elektro : Journal of Electrical Technology     Open Access   (Followers: 2)
Metrology and Measurement Systems     Open Access   (Followers: 5)
Microelectronics and Solid State Electronics     Open Access   (Followers: 18)
Nanotechnology Magazine, IEEE     Full-text available via subscription   (Followers: 33)
Nanotechnology, Science and Applications     Open Access   (Followers: 6)
Nature Electronics     Hybrid Journal  
Networks: an International Journal     Hybrid Journal   (Followers: 5)
Open Electrical & Electronic Engineering Journal     Open Access  
Open Journal of Antennas and Propagation     Open Access   (Followers: 8)
Optical Communications and Networking, IEEE/OSA Journal of     Full-text available via subscription   (Followers: 15)
Paladyn. Journal of Behavioral Robotics     Open Access   (Followers: 1)
Power Electronics and Drives     Open Access   (Followers: 1)
Problemy Peredachi Informatsii     Full-text available via subscription  
Progress in Quantum Electronics     Full-text available via subscription   (Followers: 7)
Pulse     Full-text available via subscription   (Followers: 5)
Radiophysics and Quantum Electronics     Hybrid Journal   (Followers: 2)
Recent Advances in Communications and Networking Technology     Hybrid Journal   (Followers: 3)
Recent Advances in Electrical & Electronic Engineering     Hybrid Journal   (Followers: 9)
Research & Reviews : Journal of Embedded System & Applications     Full-text available via subscription   (Followers: 5)
Security and Communication Networks     Hybrid Journal   (Followers: 2)
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of     Hybrid Journal   (Followers: 53)
Semiconductors and Semimetals     Full-text available via subscription   (Followers: 1)
Sensing and Imaging : An International Journal     Hybrid Journal   (Followers: 2)
Services Computing, IEEE Transactions on     Hybrid Journal   (Followers: 4)
Software Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 75)
Solid-State Circuits Magazine, IEEE     Hybrid Journal   (Followers: 13)
Solid-State Electronics     Hybrid Journal   (Followers: 9)
Superconductor Science and Technology     Hybrid Journal   (Followers: 2)
Synthesis Lectures on Power Electronics     Full-text available via subscription   (Followers: 3)
Technical Report Electronics and Computer Engineering     Open Access  
TELE     Open Access  
Telematique     Open Access  
TELKOMNIKA (Telecommunication, Computing, Electronics and Control)     Open Access   (Followers: 9)
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 6)
Visión Electrónica : algo más que un estado sólido     Open Access   (Followers: 1)
Wireless and Mobile Technologies     Open Access   (Followers: 6)
Wireless Power Transfer     Full-text available via subscription   (Followers: 4)
Women in Engineering Magazine, IEEE     Full-text available via subscription   (Followers: 11)
Електротехніка і Електромеханіка     Open Access  

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Similar Journals
Journal Cover
Aerospace and Electronic Systems, IEEE Transactions on
Journal Prestige (SJR): 0.611
Citation Impact (citeScore): 3
Number of Followers: 315  
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0018-9251
Published by IEEE Homepage  [191 journals]
  • IEEE Aerospace and Electronic Systems Society
    • Abstract: Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • An Adaptive Iterative Thresholding Algorithm for Distributed MIMO Radars
    • Authors: Azra Abtahi;Masoumeh Azghani;Farokh Marvasti;
      Pages: 523 - 533
      Abstract: In this paper, a Block Iterative Method with Adaptive Thresholding for Sparse Recovery (BIMATSR) is proposed to recover the received signal in an under-sampled distributed multiple-input multiple-output radar. The BIMATSR scheme induces block sparsity with the aid of a signal-dependent thresholding operator which increases the accuracy of the target parameter estimation task. We have proved that under some sufficient conditions, the suggested scheme converges to a stable solution. Moreover, different simulation scenarios confirm that the BIMATSR algorithm outperforms its counterparts in terms of the target parameter estimation. This superiority is achieved at the expense of slightly more computational complexity. It is also shown that in this application, random sampling scheme offers better performance than random Gaussian matrix, while it has simpler structure.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Censoring Outliers in Radar Data: An Approximate ML Approach and its
    • Authors: Sudan Han;Antonio De Maio;Vincenzo Carotenuto;Luca Pallotta;Xiaotao Huang;
      Pages: 534 - 546
      Abstract: This paper deals with the problem of censoring outliers in a class of complex multivariate elliptically contoured distributed radar data, which is a vital issue in radar signal processing applications, such as adaptive radar detection and space-time adaptive processing. The maximum likelihood (ML) estimate of the outlier subset is derived resorting to the generalized likelihood function (GLF) criterion. Since the ML estimate involves the solution of a combinatorial problem, a reduced complexity but approximate ML (AML) procedure is also considered. At the analysis stage, the performance of the AML method is evaluated in the presence of both simulated and real radar data, also in comparison with the conventional generalized inner product (GIP) and the reiterative censored GIP (RCGIP) algorithms. The results highlight that the AML technique achieves a satisfactory performance level and can outperform both GIP and RCGIP in some situations.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • A Backstepping-Based Guidance Law for an Exoatmospheric Missile With
           Impact Angle Constraint
    • Authors: Qing Ye;Chunsheng Liu;Jingliang Sun;
      Pages: 547 - 561
      Abstract: A novel method of exoatmospheric guidance law design is proposed in this paper. By analyzing the nonlinear kinematic equations, a class of nominal motions that requires no maneuver effort can be derived for a nose jet control missile. A unique time to go can be solved online from the equations derived from the property of the nominal motion to guarantee a perfect interception. With the time to go determined, the nominal heading angle and heading angular rate can be obtained to impose an impact angle constraint. A backstepping-based continuous three-order finite-time guidance law is designed such that the heading angle tracking is guaranteed. The superiority of the guidance law is demonstrated by a series of simulation results.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Fixed-Time Maneuver Control of Spacecraft Autonomous Rendezvous With a
           Free-Tumbling Target
    • Authors: Qinglei Hu;Wei Chen;Lei Guo;
      Pages: 562 - 577
      Abstract: This paper considers the fixed-time translational operation control issue for the spacecraft rendezvous task with a free-tumbling target. The translation dynamics model of the rendezvous mission under actuator misalignments is first established in the line-of-sight coordinate frame. Then, a novel time-varying sliding mode surface is constructed and a control scheme with the sliding manifold is proposed to achieve the fixed-time convergence of relative parameters’ tracking errors. It is interesting that the preceding convergence time can be altered explicitly according to the specific rendezvous requirements. Meanwhile, a modified updating strategy is developed to ensure system's fixed-time convergence property in the presence of lumped uncertainties (external disturbance and actuator misalignments). The associated stability proof is constructive and accomplished by the development of a Lyapunov function candidate. Finally, numerical simulations on rendezvous missions are performed to demonstrate the effectiveness and the superiorities of the designed fixed-time control scheme.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Generalized Ambiguity Function Properties of Ground-Based Wideband MIMO
           Imaging Radar
    • Authors: Cheng Hu;Jingyang Wang;Weiming Tian;Rui Wang;Hongyu Li;Liang Zhu;
      Pages: 578 - 591
      Abstract: The ability of multiple-input multiple-output (MIMO) radar to provide enhanced performance has been verified in both theoretical and practical level. Through applying orthogonal waveforms, this type of system can realize far more observation channels than the actual number of transmit and receive (T/R) elements. Generally, the azimuth one-dimensional (1-D) generalized ambiguity function (GAF) and resolution of a MIMO radar system are analyzed by pattern theory, which can only analyze the GAF along the equidistant curve to the radar's center. However, the two-dimensional (2-D) GAF of wideband MIMO radar system shows that its sidelobes are not along the equidistant curve accurately due to the coupling effect between the range-dimension and the azimuth one. Obviously, the traditional pattern theory becomes invalid in this case. To tackle this problem, the 2-D GAF and the spatial spectrum of far-field targets are derived in this paper. By analyzing the 2-D GAF, existence of three individual directions of sidelobes is revealed and it is proved that every sidelobes is along a straight line in the pseudopolar coordinate system. Furthermore, a method to calculate the 1-D GAF and resolution in the arbitrary direction is proposed. Finally, a simulation and two experiments have been carried out to validate the theoretic results.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Cellular Base Station Assisted Indoor Positioning
    • Authors: Xiukui Li;
      Pages: 592 - 606
      Abstract: In this paper, first, two methods of positioning an indoor receiver with transferred global navigation satellite system signals from cellular base stations are proposed. Then, a technique of fusing the position results produced by the two methods through Kalman filter is introduced; thus, the positioning accuracy is improved. To mitigate the near–far problem generated by signals from base stations and satellites, a pulse shaping scheme and the strategy of assigning pulse patterns to base stations are investigated.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Radar Detection Architecture Based on Interference Covariance Structure
    • Authors: Vincenzo Carotenuto;Antonio De Maio;Danilo Orlando;Petre Stoica;
      Pages: 607 - 618
      Abstract: This paper proposes a new radar detection architecture, which is composed of an interference covariance structure classifier and a bank of adaptive radar detectors. The classifier is based on model order selection theory and the Bayesian information criterion to determine the covariance structure that is deemed to be suitable for a specific set of radar data [1]. This decision stage drives the choice of the radar detector within a specific class of adaptive detectors to establish the possible target presence. The critical issue concerning the constant false alarm rate behavior of the architecture is discussed and two techniques for the threshold setting process are proposed. Finally, the detection performance analysis, conducted on both simulated and measured data, shows that the proposed architecture can guarantee better performance than classic radar decision schemes in scenarios where the interference covariance exhibits structural properties.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Intelligent Multibeam Transmissions for Mission-Oriented Airborne Networks
    • Authors: Fei Hu;Xin Li;Elizabeth Serena Bentley;Lei Hu;Ke Bao;Sunil Kumar;
      Pages: 619 - 630
      Abstract: By using the multibeam smart antennas (MBSAs), the nodes can form a high-throughput wireless mesh network with concurrent packet delivery in multiple directions. In this paper, a novel medium access control (MAC) scheme is designed for multibeam airborne mesh networks. It has the following two features: First, IEEE 802.11-compatible, interference-minimized channel access via a special two-layer MAC architecture, where the upper-layer MAC supports the concurrent multibeam transmission/reception, and the lower-layer MAC takes advantage of MBSAs; second, adjustment of the parameters of the two MAC layers to support different mission priorities in airborne networks, including the allocation of time slots in the upper layer. The simulation results demonstrate the superior performance of our proposed multibeam MAC protocols.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Evaluating the Performance of FM-Based PCL Radar in the Presence of
    • Authors: Stephen Paine;Daniel W. O’Hagan;Michael Inggs;Christof Schüpbach;Urs Böniger;
      Pages: 631 - 643
      Abstract: In this paper, we examine an FM-based passive coherent location (PCL) radar system and attempt to quantify its performance in the presence of various different jamming waveforms namely broadband noise and a single tone on the carrier. It is shown that effective jamming can be achieved with relatively low jamming power. The importance of an effective direct signal canceller is also shown as a means of suppressing the jamming signal. The effect of these jamming scenarios is shown through simulation and then compared to a representative measured result from a real FM-based PCL radar system.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Spatio-Spectral Radar Beampattern Design for Coexistence With Wireless
           Communication Systems
    • Authors: Bosung Kang;Omar Aldayel;Vishal Monga;Muralidhar Rangaswamy;
      Pages: 644 - 657
      Abstract: We address the problem of designing a transmit beampattern for multiple-input multiple-output (MIMO) radar considering coexistence with wireless communication systems. The designed beampattern is able to manage the transmit energy in spatial directions as well as in spectral frequency bands of interest by minimizing the deviation of the designed beampattern versus a desired one under a spectral constraint as well as the constant modulus constraint. While unconstrained beampattern design is straightforward, a key open challenge is jointly enforcing the spectral constraint in addition to the constant modulus constraint on the radar waveform. A new approach is proposed in this paper, which involves solving a sequence of constrained quadratic programs such that constant modulus is achieved at convergence. Furthermore, we show that each problem in the sequence has a closed form solution leading to analytical tractability. We evaluate the proposed beampattern with interference control (BIC) algorithm against the state-of-the-art MIMO beampattern design techniques and show that BIC achieves closeness to an idealized beampattern along with desired spectral shaping.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Confidence Test for Blind Analysis of BPSK Signals
    • Authors: Guobing Hu;Pinjiao Zhao;
      Pages: 658 - 675
      Abstract: A binary-hypothesis-test-based algorithm is proposed to assess the confidence of blind analysis results of binary phase-shift keying signals. The reference signal is first constructed based on the given analysis result. The spectrum of multiplication between observed signals and reference signals is used as a distinguishing statistic, and the decision based on the false alarm rate is accordingly taken to verify whether a specific analysis is confident or not. The theoretical analysis and simulation results validate the effectiveness of the proposed algorithm.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Characterization of Phase Information of Synthetic Aperture Radar Imagery
    • Authors: Linda J. Moore;Brian D. Rigling;Robert P. Penno;
      Pages: 676 - 688
      Abstract: Traditional synthetic aperture radar (SAR) systems tend to discard phase information of formed complex radar imagery prior to automatic target recognition (ATR). This practice was historically driven by available hardware storage, processing capabilities, and data link capacity. Here, we characterize the value of phase in SAR imagery when estimating target features utilized in ATR algorithms for target discrimination.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • A Rotation-Invariant Additive Vector Sequence Based Star Pattern
    • Authors: Deval Samirbhai Mehta;Shoushun Chen;Kay-Soon Low;
      Pages: 689 - 705
      Abstract: A novel star pattern recognition technique for a “Lost-in-space” mode star tracker is presented in this paper. First, the two-dimensional (2-D) vectors connecting the stars are constructed in a rotation-invariant frame. Later, the additive property of 2-D vectors is integrated with the rotation-invariant frame to build a vector sequence for star identification. The proposed technique achieves an identification accuracy of 98.7% and has a run-time of only 12 ms for real-time testing on star images.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Systematic Medium Access Control in Hierarchical Airborne Networks With
           Multibeam and Single-Beam Antennas
    • Authors: Xin Li;Fei Hu;Ji Qi;Sunil Kumar;
      Pages: 706 - 717
      Abstract: A heterogeneous medium access control (MAC) scheme (with both scheduled and random communications) is proposed for airborne networks. These networks have a hierarchical topology with a small number of powerful aircraft nodes with multibeam antennas and long-distance links at the higher level, and high-density unmanned aerial vehicle (UAV) nodes with single-beam directional antennas at the lower level. Our proposed MAC scheme has the following three parts: First, multibeam, long-distance MAC for aircraft to aircraft links: a dynamic, scheduled MAC is proposed to take advantage of the multibeam features to achieve high-throughput transmissions, and the beam locking/synchronization issues are solved; second, uplink MAC for UAV to aircraft communication: conventional IEEE 802.11n MAC is enhanced with fame aggregation and compressive-sensing-based request polling; and third, MAC for UAV to UAV links: IEEE 802.11e DCF MAC is enhanced through parameter adjustment for channel access. Our simulation results show the significant performance improvement over conventional MAC protocols.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Multiview Three-Dimensional Interferometric Inverse Synthetic Aperture
    • Authors: Federica Salvetti;Marco Martorella;Elisa Giusti;Daniele Staglianò;
      Pages: 718 - 733
      Abstract: Three-dimensional (3D) inverse synthetic aperture radar (ISAR) imaging has been proven feasible by combining traditional ISAR imaging and interferometry. Such technique, namely Inteferometric ISAR (InISAR), allows for the main target scattering centers to be mapped into a 3-D spatial domain, therefore forming 3-D images under the form of 3-D point clouds. 3-D InISAR overcomes some main limitations of traditional 2-D ISAR imaging, such as the problem of cross-range scaling and unknown image projection plane. Despite the great advantage of 3-D imaging over traditional 2-D imaging, some issues remain, such as scatterer scintillation, shadowing effects, poor SNR, etc., which limit the effectiveness of 3-D imaging. A solution to these issues can be found in the use of multiple 3-D views, which can be obtained exploiting either multitemporal or multiperspective configurations or a combination of both. This paper proposes this concept and develops the image fusion algorithms that are necessary to produce multiview 3-D ISAR images. The effectiveness of the proposed technique is tested by using real data collected with a multistatic InISAR system.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Position-Domain Integrity Analysis for Generalized Integer Aperture
    • Authors: Gary Nathan Green;Todd Humphreys;
      Pages: 734 - 746
      Abstract: A full analysis of position-domain integrity is carried out for the recently introduced generalized integer aperture bootstrapping (GIAB) technique, a data-driven method for resolving and validating global navigation satellite system carrier-phase integer ambiguities suitable for high-integrity safety-critical systems. The analysis can be extended to all integer aperture (IA) techniques that are generalized in the sense of allowing partial integer fixing. It is shown that generalized IA methods produce relative position (baseline) estimates that suffer from nonnegligible biases. Key conditional distributions of the baseline computed from GIAB-validated ambiguities are rigorously derived for both full and partial ambiguity resolution. These distributions enable evaluation of the a posteriori risk from bias in the GIAB baseline estimate. Compared to enforced position-domain integrity risk of cycle resolution, the state-of-the-art high-integrity algorithm, GIAB is shown to satisfy tighter integrity requirements for the same measurement model.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Fractional-Order Fuzzy Sliding Mode Control for the Deployment of Tethered
           Satellite System Under Input Saturation
    • Authors: Shidong Xu;Guanghui Sun;Zhiqiang Ma;Xiaolei Li;
      Pages: 747 - 756
      Abstract: In this paper, a novel fractional-order fuzzy sliding mode control strategy is developed to realize the deployment of the tethered satellite system (TSS) with input saturation. The considered TSS is modeled as an underactuated system. By decoupling the underactuated system into two subsystems, a fractional-order and a constrained integer-order sliding surfaces are designed for the actuated and unactuated subsystems, respectively. Then, a new hybrid sliding manifold is obtained by coupling the two subsliding surfaces. Adaptive fuzzy algorithm is used to regulate the coupling coefficient in the newly proposed hybrid sliding manifold in order to procure satisfactory performance. Meanwhile, the saturation nonlinearity of control input is also considered. The asymptotic stability of the closed-loop system is demonstrated theoretically. With the existence of fractional order, the presented controller can perform faster and more smooth tether deployment when compared with conventional ones. Finally, the effectiveness and superiority of the proposed control approach are validated by illustrative simulations.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Data-Driven Generalized Integer Aperture Bootstrapping for High-Integrity
    • Authors: Gary Nathan Green;Todd E. Humphreys;
      Pages: 757 - 768
      Abstract: A new method is developed for integer ambiguity resolution in carrier-phase differential global navigation satellite system positioning. The method is novel in that it is simultaneously data-driven, generalized to include partial ambiguity resolution, and amenable to a full analytical characterization of the prior probabilities of correctly and incorrectly resolved ambiguities. The technique is termed generalized integer aperture bootstrapping (GIAB). A full development of the GIAB is provided herein, including sizing its integer aperture to usually produce a higher prior probability of full ambiguity resolution than comparable existing methods. In Monte-Carlo simulations, the GIAB is shown to provide nearly optimal ambiguity resolution success rates of full ambiguity resolution for relevant integrity requirements under strong models while enabling partial ambiguity resolution.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Approximate MLSE Equalization of SOQPSK-TG in Aeronautical Telemetry
    • Authors: Michael Rice;Edem Gagakuma;
      Pages: 769 - 784
      Abstract: An approximate maximum likelihood sequence estimator (MLSE) equalizer for shaped offset QPSK, version TG (SOQPSK-TG) is derived based on the pulse amplitude modulation (PAM) approximation of SOQPSK-TG using the two principal PAM pulses. The resulting equalizer is a generalization of the equalizer based on the Ungerboeck observation model, where the generalization is to two parallel, cross-correlated symbol streams over parallel intersymbol interference channels. The bit error rate (BER) performance and computational complexity of the approximate MLSE equalizer operating over three example channels, motivated by multipath propagation in aeronautical telemetry and with increasing selectivity, are presented. The BER performance was evaluated using computer simulations and shown to be approximately 5–8 dB better than the best frequency-domain minimum mean-squared error (MMSE) equalizers published in the open literature. The computational complexity, measured by the number of real-valued multiplications, is comparable to that of the frequency-domain MMSE equalizers.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Fusing Deep Learning and Sparse Coding for SAR ATR
    • Authors: Odysseas Kechagias-Stamatis;Nabil Aouf;
      Pages: 785 - 797
      Abstract: We propose a multimodal and multidiscipline data fusion strategy appropriate for automatic target recognition (ATR) on synthetic aperture radar imagery. Our architecture fuses a proposed clustered version of the AlexNet convolutional neural network with sparse coding theory that is extended to facilitate an adaptive elastic net optimization concept. Evaluation on the MSTAR dataset yields the highest ATR performance reported yet, which is 99.33% and 99.86% for the three- and ten-class problems, respectively.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Explicit Parameterized Energy Management for Scramjet Transition
    • Authors: Mingwei Sun;Youan Zhang;Jingmao Liu;Jian Huang;Zenghui Wang;Zengqiang Chen;
      Pages: 798 - 809
      Abstract: This paper presents a guidance law for a booster to meet the requirements of scramjet transition. The straightforward open-loop and closed-loop guidance laws are combined together through a smooth switch. In the closed-loop guidance law, the worst case with a minimal lift-drag ratio is selected to obtain a nominal elevation angle. The excessive energy due to various uncertainties could be dissipated around this nominal trajectory adaptively. Numerical simulations are conducted to validate the effectiveness and robustness of the proposed method.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Integration of Spectral Histogram and Level Set for Coastline Detection in
           SAR Images
    • Authors: Mohammad Modava;Gholamreza Akbarizadeh;Mohammad Soroosh;
      Pages: 810 - 819
      Abstract: This study proposed a novel algorithm for coastline detection in single-polarization synthetic aperture radar (SAR) images based on the local spectral histogram (LSH) and the level set method (LSM). The proposed algorithm includes two main steps. In the processing step, a rough land/sea segmentation is done by utilizing a texture-based segmentation using LSH. In the postprocessing step, the region-based LSM is used to refine the previous segmentation and extract the coastline accurately. The level set (LS) function is initialized using the results of LSH segmentation. This prevents the development of spurious contours, becoming trapped in the local minimum, eliminates the manual support, and also speeds up the LS evolution. A hierarchical LS regularization is proposed using two Gaussian kernels, which is compatible with noisy images and able to detect very narrow regions. The proposed algorithm is able to detect a coastline at the full resolution of the input SAR image and is also robust to noise. A criterion to quantify the accuracy of the results was also proposed. The experimental results for a number of real high-resolution single-polarization SAR images demonstrate that the proposed method is robust to noise and efficient for the coastline detection in different coastal and sea environments.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • A Disambiguation Technique for Passive Localization Using Trajectory
    • Authors: Mohammad Samizadeh Nikoo;Fereidoon Behnia;
      Pages: 820 - 829
      Abstract: In some well-known passive localization methods, when the number of equations equals the number of unknown object coordinates, there arise finite number of possible solutions. A localization disambiguation technique is required to identify the correct solution in these cases. As an example, the exact solution of time-difference-of-arrival (TDOA) based equations for four receiver sites, leads to a couple of solutions with only one of them being the true target position. This ambiguity conventionally is resolved by using angle-of-arrival measurements or using an additional receiver site, which increase the cost and complexity of the system. In this paper, a localization disambiguation technique for a moving target based on sequential measurements is presented. In the proposed method, the correct solution corresponding to each measurement is identified by determining the most sensible path of the target. The method analytically finds the position of the target and no extra measurement/site is required. Performance of the proposed method has been evaluated and verified in numerous simulations as well as real data based on TDOA measurements.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • All-Aspect Guidance With Impact Angle Constraint Against Unknown Target
    • Authors: Hyeong-Geun Kim;Hyoun Jin Kim;
      Pages: 830 - 845
      Abstract: This paper presents an all-aspect guidance law that allows the missile to achieve the interception of a target at the prescribed impact angle for any initial conditions. The proposed guidance law is designed to intercept a maneuvering target without requiring information of the normal acceleration of the target. In order to develop a guidance law that ensures all-aspect capability, the kinematic conditions that always guarantee the interception of the maneuvering target at the desired impact angle are defined. The defined kinematic conditions are expressed as two error variables for simultaneously satisfying the homing and impact angle control, and the guidance law is derived by stabilizing both error variables near zero based on the backstepping control technique. The analysis of the overall closed-loop dynamics verifies that the proposed law achieves the interception of the maneuvering target at the prescribed impact angle from any initial heading and boresight conditions, despite the absence of the information of the target acceleration. Numerical simulations also demonstrate that the proposed law achieves an acceptable miss distance at the desired impact angle for various initial conditions against different types of nonstationary targets: nonmaneuvering targets, constant-maneuvering targets, and weaving targets.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • TCP-Based M2M Traffic via Random-Access Satellite Links: Throughput
    • Authors: Manlio Bacco;Tomaso De Cola;Giovanni Giambene;Alberto Gotta;
      Pages: 846 - 863
      Abstract: Provisioning of Internet of Things/machine-to-machine (M2M) services over satellite has been experiencing a continuous growth in the last few years, which is expected to further increase in the near future so as to meet the demands of users and enterprises. The design of a suitable network architecture is, hence, of paramount importance to properly take into account the requirements imposed by the technology available nowadays and to properly consider the interaction of the so-defined physical layer with transport and application layers. In this light, this paper analyzes the use case of TCP-based M2M services operating over DVB-RCS2 satellite links, where a contention resolution diversity slotted ALOHA access scheme is applied. The main goal of this paper is to provide a thorough understanding of the interactions of TCP and random access schemes, recognized as key elements to enable efficient M2M services over satellite. In this regard, this paper also develops a novel TCP throughput model, which has been validated through extensive simulation campaigns, proving the value of the proposed theoretical framework and its applicability to study the performance of M2M services in more general satellite scenarios.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • A Method for 3-D ISAR Imaging of Space Debris
    • Authors: Yu Ning;Feng Zhou;Xueru Bai;Lei Liu;
      Pages: 864 - 876
      Abstract: The radar echoes of space debris sometimes have drawbacks of inadequate pulse samples, self-occlusion, and data missing, while the state-of-art radar imaging algorithms become unproductive. To tackle this problem, this paper proposes a novel method for three-dimensional (3-D) imaging of space debris. This iterative algorithm terminates automatically and can recover the intensity of space debris radar cross section, making it practical in real-world applications. Unlike the 3-D imaging methods based on multistatic inverse synthetic aperture radar, the proposed method is applicable to monostatic ISAR.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Multichannel Staggered SAR: System Concepts With Reflector and Planar
    • Authors: Felipe Queiroz de Almeida;Tobias Rommel;Marwan Younis;Gerhard Krieger;Alberto Moreira;
      Pages: 877 - 902
      Abstract: In the context of radar spaceborne imaging, the novel multichannel staggered synthetic aperture radar (SAR) mode represents a promising solution for the mapping of ultrawide swaths with very high azimuth resolution. This paper extends the analysis of multichannel staggered SAR to planar antenna architectures and provides system design examples both for planar and reflector antenna architectures. Furthermore, a first proof of concept using measured data acquired by an experimental ground-based system is provided to demonstrate the approach's feasibility.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Positioning of Geostationary Satellite by Radio Interferometry
    • Authors: Mohammad Sadeghi;Fereidoon Behnia;Hamed Haghshenas;
      Pages: 903 - 917
      Abstract: There are several perturbations that force the satellite orbit to deviate from the elliptical form. To cope with these perturbations, station keeping is applied. For accurate station keeping, determination of the true satellite orbit is necessary. Radio interferometry is one of the techniques used for determining azimuth and elevation look angles of a satellite. In this paper, we introduce three structures based on interferometry for determining the view angles of satellites. The estimated angles are combined with range measurement for orbital positioning of geostationary (GEO) satellites. In the proposed interferometry structures, to acquire the required angular accuracy, the distance between antennas is set larger than the maximum half-wavelength, and the incurred ambiguities are resolved by utilizing properties of GEO satellites. For each of the proposed structures, maximum likelihood estimators are proposed. It is shown that, in low measurement noise cases, these proposed estimators are unbiased and their mean square error achieves the Cramer–Rao bound.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Contact Dynamics and Control for Tethered Space Net Robot
    • Authors: Yakun Zhao;Panfeng Huang;Fan Zhang;Zhongjie Meng;
      Pages: 918 - 929
      Abstract: Maneuverable tethered space net robot (TSNR) is promising for active debris removal due to its flexibility and controllability. However, the contact dynamics of TSNR is not completely understood. Therefore, the contact dynamics is analyzed and the net does not close completely after contact. A super-twisting sliding mode control scheme is designed to make the net completely closed and avoid the risk of tether cut. The efficacy of the controller is validated by simulation results.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Annual Deep-Space Flight Operation Verification of X-Band GaN SSPA
    • Authors: Yuta Kobayashi;Atsushi Tomiki;Shigeo Kawasaki;
      Pages: 930 - 938
      Abstract: An X-band, Gallium nitride (GaN)-based solid-state power amplifier (SSPA) was demonstrated for more than one year in deep space for the first time. The SSPA consisted of three-stage amplifiers and commercial off-the-shelf (COTS) GaN high-electron-mobility transistors (HEMTs) were used in both the second- and the final-stage amplifiers. During its one year of continuous operation, the GaN SSPA improved equivalent isotopically radiated power with low power consumption such as an average output power of 41.7 dBm (14.8 W), average power consumption of 43.5 W, and average efficiency of 33.7%. In addition, the deterioration rate of output power calculated from the inclination of the linear approximation line was no more than −0.08 dB per year. These results stand comparison with the results of high-temperature, long-term continuous operation test or a total ionizing dose test conducted on the ground. This paper illustrates the space applicability and reliability of the SSPA using a COTS GaN HEMT.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Optimum Sparse Subarray Design for Multitask Receivers
    • Authors: Anastasios Deligiannis;Moeness Amin;Sangarapillai Lambotharan;Giuseppe Fabrizio;
      Pages: 939 - 950
      Abstract: The problem of optimum sparse array configuration to maximize the beamformer output signal-to-interference plus noise ratio (MaxSINR) in the presence of multiple sources of interest (SOI) has been recently addressed in the literature. In this paper, we consider a shared aperture system where optimum sparse subarrays are allocated to individual SOIs and collectively span the entire full array receiver aperture. Each subarray may have its own antenna type and can comprise a different number of antennas. The optimum joint sparse subarray design for shared aperture based on maximizing the sum of the subarray beamformer SINRs is considered with and without SINR threshold constraints. We utilize Taylor series approximation and sequential convex programming techniques to render the initial nonconvex optimization a convex problem. The simulation results validate the shared aperture design solutions for MaxSINR for both cases where the number of sparse subarray antennas is predefined or left to constitute an optimization variable.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Sliding Mode Guidance and Control for UAV Carrier Landing
    • Authors: Seokwon Lee;Jihoon Lee;Somang Lee;Hyunjin Choi;Youdan Kim;Seungkeun Kim;Jinyoung Suk;
      Pages: 951 - 966
      Abstract: A guidance and control system is proposed for automatic carrier landing of an unmanned aerial vehicle (UAV). To this end, the position and attitude of the carrier is predicted by considering the sea state so that the UAV guidance loop can be compensated during the final approach phase. The landing kinematics and reference trajectory are determined using the predicted touchdown position. Nonlinear guidance and control laws are designed based on a sliding-mode control scheme to make the UAV robustly follow the reference trajectory.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Reciprocal-Filter-Based STAP for Passive Radar on Moving Platforms
    • Authors: Philipp Wojaczek;Fabiola Colone;Diego Cristallini;Pierfrancesco Lombardo;
      Pages: 967 - 988
      Abstract: This paper addresses the problem of clutter cancellation and slowly moving target detection in digital video broadcast-terrestrial-based passive radar systems mounted on moving platforms. First, we show that conventional processing approaches based on the availability of multiple receiving channels might be ineffective in the considered scenarios due to the impossibility to control the employed waveform of opportunity. Therefore, an appropriate space-time adaptive processing scheme is proposed to cope with the Doppler spread clutter returns aiming at ground moving target indication applications. It exploits the benefits of the reciprocal filtering strategy applied at a range compression stage together with a flexible displaced phase center antenna approach. The effectiveness of the proposed scheme is demonstrated via application to a simulated dataset and then tested against experimental data collected by multichannel passive radar on a maritime moving platform.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Surface Clutter Discrimination Analysis for Radar Sounding Interferometry
    • Authors: Mark S. Haynes;Elaine Chapin;Alina Moussessian;Soren N. Madsen;
      Pages: 989 - 1003
      Abstract: This paper reports a method to analyze surface clutter discrimination for radar sounding interferometry. Nadir-looking low-frequency radar sounders cannot easily resolve off-nadir surface echoes from subsurface nadir echoes. Sounders equipped with multichannel receivers can use interferometric phase to discriminate whether a feature is at nadir or not. We developed a method to evaluate the performance of this application of interferometry and used it to analyze the selected Radar for Europa Assessment and Sounding: Ocean to Near-surface (REASON) instrument on NASA's Europa Clipper mission to Jupiter's moon Europa.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Multiple Model Method for Aircraft Conflict Detection and Resolution in
           Intent and Weather Uncertainty
    • Authors: Vesselin P. Jilkov;Jeffrey H. Ledet;X. Rong Li;
      Pages: 1004 - 1020
      Abstract: This paper presents a novel multiple model (MM) method for aircraft conflict detection and resolution (CDR) in intent and weather uncertainty for the next generation air transportation system. It is based on probabilistic MM aircraft trajectory prediction. Conflict detection is performed through the use of predicted probability of conflict (PC). An improved algorithm for estimating PC is proposed and compared with a commonly used method. Conflict resolution (CR) is formulated as a stochastic model predictive control (MPC) problem subject to a constraint on the predicted PC to guarantee safety of the optimized CR trajectories. The cost function to be minimized is tailored to the CR problem and includes the cost of performing evasive maneuvers as well as the average cost incurred by extra travel distance to the destination due to the maneuvers. An efficient algorithm for finding the optimal path (maneuver sequence), with respect to the maneuver cost, is proposed and extended to an overall CDR optimization algorithm for the total cost, in order to produce optimized conflict-free CR trajectories. The proposed search algorithm is essentially a generalization of an optimal list Viterbi algorithm (for unconstrained minimization through a trellis) to the constrained case of our MPC-based CDR problem. The capability and computational efficiency of the proposed MM-CDR method (including PC prediction, optimal search, and overall CDR) are evaluated via comprehensive simulation of a large variety of unmanned aerial vehicle “sense-and-avoid” encounter scenarios, and are compared with existing methods in the literature.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Stochastic Observability and Uncertainty Characterization in Simultaneous
           Receiver and Transmitter Localization
    • Authors: Joshua J. Morales;Zaher (Zak) M. Kassas;
      Pages: 1021 - 1031
      Abstract: The stochastic observability of simultaneous receiver and transmitter localization is studied. A mobile vehicle-mounted receiver is assumed to draw pseudorange measurements from multiple unknown radio frequency transmitters and to fuse these measurements through an extended Kalman filter (EKF) to simultaneously localize the receiver and transmitters together with estimating the receiver's and transmitters’ clock errors. The receiver is assumed to have perfect a priori knowledge of its initial states, while the transmitters’ states are unknown. It is shown that the receiver's and transmitters’ clock biases are stochastically unobservable and that their estimation error variances will diverge. A lower bound on the divergence rate of the estimation error variances of the receiver's and transmitters’ clock biases is derived and demonstrated numerically. Simulation and experimental results are presented for an unmanned aerial vehicle navigating without GPS signals, using pseudoranges made on unknown terrestrial transmitters. It is demonstrated that despite the receiver's and transmitters’ clock biases being stochastically unobservable, the EKF produces bounded localization errors.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Refinements of Binary Integration for Swerling Target Fluctuations
    • Authors: Hyeongyong Lim;Dongweon Yoon;
      Pages: 1032 - 1036
      Abstract: A general expression for binary integration for Swerling target fluctuations is developed in terms of the regularized incomplete beta function, which is accurately and efficiently calculated by built-in functions in software packages. From the general expression, optimal thresholds for binary integration are revisited.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Pseudo-Zernike Moments Based Sparse Representations for SAR Image
    • Authors: Shahzad Gishkori;Bernard Mulgrew;
      Pages: 1037 - 1044
      Abstract: We propose radar image classification via pseudo-Zernike moments based sparse representations. We exploit invariance properties of pseudo-Zernike moments to augment redundancy in the sparsity representative dictionary by introducing auxiliary atoms. We employ complex radar signatures. We prove the validity of our proposed methods on the publicly available moving and stationary target acquisition and recognition dataset.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Experimental Observations of Micro-Doppler Signatures With Passive Radar
    • Authors: Joseph Landon Garry;Graeme E. Smith;
      Pages: 1045 - 1052
      Abstract: Passive radar's ability to observe micro-Doppler phenomena from helicopters, fixed-wing propeller aircraft, and jet engine modulation is examined. Experimental results from a digital television based passive radar demonstrate its potential to observe characteristic signatures of multiple types of air targets and estimate helicopters’ primary rotor parameters.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Technical Areas and Editors: AESS IEEE Aerospace & Electronic Systems
    • Pages: 1053 - 1057
      Abstract: Presents a listing of AESS society technical editors along with areas of expertise.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
  • Information for authors
    • Pages: 1058 - 1059
      Abstract: Provides instructions and guidelines to prospective authors who wish to submit manuscripts.
      PubDate: April 2019
      Issue No: Vol. 55, No. 2 (2019)
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
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