Results 21 to 30 of about 5,182,494 (142)
An Efficient Imaging Method for Medium-Earth-Orbit Multichannel SAR-GMTI Systems
Remote Sensing, 2022 Medium-Earth-orbit (MEO) synthetic aperture radar (SAR) has the advantages of short revisit time and wide coverage, and thus is a potential tool for implementing ground moving target indication (GMTI) tasks.
Yongkang Li, Tianyu Huo, Cuiqian Cao
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Moving Target Indication for Dual-Channel Circular SAR/GMTI Systems. [PDF]
Sensors (Basel), 2019 In a dual-channel circular synthetic aperture radar (CSAR) and ground moving target indication (GMTI) system, the antenna baseline is not parallel with the flight path due to a yaw angle.
Wang L, Li Y, Wang W, An D.
europepmc +2 more sources
Moving target detection method based on CUR‐RPCA for missing array elements
IET Radar, Sonar &Navigation, Volume 16, Issue 12, Page 2089-2103, December 2022., 2022 Abstract Moving target detection performance is seriously affected by missing array elements for multichannel synthetic aperture radar (Multi‐SAR) systems. Meanwhile, there is a contradiction between the accuracy of data recovery and the computational burden in traditional methods.
Jianli Shi +4 more
wiley +1 more source
Electronics Letters, Volume 58, Issue 8, Page 324-326, April 2022., 2022 Abstract Due to the azimuth shift and defocus of the moving targets in the synthetic aperture radar image domain, a new synthetic aperture radar ground moving target indication method is proposed in this letter based on the changes of moving targets’ polarization characteristics before and after clutter suppression. This method can effectively suppress
Xiaolong Hao +4 more
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Journal of Sensors, Volume 2022, Issue 1, 2022., 2022 Tracking ground moving target with sensors proves to be a challenge due to the uncertainty of target motion area, the existence of Doppler blind zone (DBZ), and the complex terrain. In this paper, a multisensor management method based on DBZ information is presented, in which the available sensors are selected to obtain the best operational revenues ...
Yunpu Zhang +4 more
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Dealing with co‐channel interference in multi‐channel airborne passive radar
IET Radar, Sonar &Navigation, Volume 15, Issue 1, Page 85-100, January 2021., 2021 Abstract We address the problem of co‐channel interference (CCI) in multi‐channel airborne passive radars using digital broadcast signals of opportunity. A framework for suppressing the CCI is proposed, based on a two‐stage approach, which reflects the range–Doppler map being a function of both a reference and a surveillance signal. In the first stage,
Diego Cristallini +4 more
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Multi-Channel SAR System Design for HRWS and GMTI in Low PRF
IEEE Access, 2020 High-resolution and wide-swath (HRWS) is an important challenge in synthetic aperture radar (SAR). Combined SAR with array, the azimuth dual-channel SAR configuration achieves high azimuth resolution and HRWS in low Pulse repetition frequency (PRF) by ...
Xuepan Zhang +3 more
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Multiperson Interactive Activity Recognition Based on Interaction Relation Model
Journal of Mathematics, Volume 2021, Issue 1, 2021., 2021 Multiperson activity recognition is a pivotal branch as well as a challenging topic of human action recognition research. This paper adopts a hybrid learning model to the spatio‐temporal relationship and occlusion relationship among multiple people.
Hongbin Tu +4 more
wiley +1 more source
International Journal of Aerospace Engineering, Volume 2021, Issue 1, 2021., 2021 With high‐precision DEM (Digital Elevation Model) and GMTI (Ground Moving Target Indicator) as the demand background, the influence of J2 zonal harmonic term perturbation on the relative motion of the millimeter‐level short‐range leader‐follower satellites in near‐circular orbit is studied through the relative perturbation method. An equation of motion
Jingji Wang, Chunyang Liu, Yue Wang
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SAR Ground Moving Target Imaging based on Sparse Representation [PDF]
فصلنامه علوم و فناوری فضایی, 2021 synthetic aperture radar (SAR) for ground moving target indication (GMTI) and imaging (GMTIm) have been gaining increasing interests for both civilian and military applications.
S. Andishe Moezzi +1 more
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