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VHF/UHF-band SAR imaging using circular tracks
2012 IEEE International Geoscience and Remote Sensing Symposium, 2012Low frequency synthetic-aperture radar (SAR) in combination with change detection techniques can be used to search for stationary ground targets. In particular, the method has shown a great potential when vehicle-size objects are obscured by foliage. However. one possibility is to improve the detection capabilities to increase the aperture angle of the
Per-Olov Frölind +3 more
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Dem Extraction Using C-Band Circular Sar Data
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019Circular Synthetic Aperture Radar(CSAR) has become a hotspot with its characteristic of elevation plane resolution and all-aspect observing ability. Digital elevation model (DEM) extraction in urban arears by using single-pass CSAR data without requiring additional knowledge is a subject of interest.
Shanshan Feng +7 more
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Extension of Range Migration Algorithm to Squint Circular SAR Imaging
IEEE Geoscience and Remote Sensing Letters, 2011This letter presents a new algorithm for squint circular synthetic aperture radar (SAR) (CSAR) imaging, which is an extension of the well-known range migration algorithm. Due to the circular trajectory, the spatial frequency domain data of squint CSAR cannot be readily obtained via fast Fourier transform, as conventional SAR with straight path does ...
Yun Lin 0002 +3 more
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Analysis of the use of digital elevation model in circular SAR imaging
2017 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC), 2017Recently, circular synthetic aperture radar (CSAR) has attracted much attention in the field of high resolution SAR imaging. However, the focusing of CSAR image is affected by the precision of digital elevation model (DEM), which is used for generating imaging grid. In this paper, the effect, which is due to limited precision of DEM, is given in detail.
Leping Chen +2 more
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Analysis of circular aperture SAR image formation
2009 Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers, 2009Remote surveillance using a synthetic aperture radar (SAR) flying a circular aperture offers several operational advantages over more traditional linear aperture SAR. Over the years, different SAR image formation algorithms have been proposed and analyzed. Almost exclusively, the analysis is based on straight line trajectory or linear aperture SAR.
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Moving target detection based on Circular Video SAR
2019 IEEE International Conference on Signal, Information and Data Processing (ICSIDP), 2019Video Synthetic Aperture Radar (Video-SAR) achieves radar video observation by continuously monitoring a certain area to form continuous image data of the target, and it plays an important role in civil and military fields. The SAR image of the moving target is defocused and deviates from its true position, but in its real position, a shadow area ...
Hongshuo Wang, Baojun Zhao, Xingsha Yang
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Repeat-pass interferometric performance analysis for geosynchronous circular SAR
SPIE Proceedings, 2014An interferometric performance analysis for repeat-pass geosynchronous circular SAR (GEOCSAR) is presented. The analysis mainly includes the errors caused by the following sources: radar thermal noise, spatial baseline decorrelation, images’ misregistration and the atmospheric effects.
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Fast Imaging Processing of Circular SAR
Journal of Electronics & Information Technology, 2014Yan Liu +3 more
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On the Method of Circular Polarimetric SAR Calibration Using Distributed Targets
IEEE Transactions on Geoscience and Remote Sensing, 2023Yonghui Han +6 more
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