An improvement method for circular synthetic aperture radar imaging |
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| Authors: | Gaowei Jia Chengfei Gu Wenge Chang Xiangyang Li |
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| Affiliation: | 1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, P. R. China;2. College of Electronic Science and Engineering, National University of Defense Technology, Changsha, Hunan, P. R. China |
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| Abstract: | Circular synthetic aperture radar (CSAR) is the imaging mode when the radar moves along a circular path and the observed area is always covered by the wave beam. It is different from traditional SAR modes (strip-map SAR and spotlight SAR) and has potential advantages such as 360° observation, target recognition, and three-dimensional reconstruction. According to the imaging processing of CSAR, motion error is an important issue affecting the CSAR image quality, but the motion compensatio n (MOCO) method for CSAR is underdeveloped. Accordingly, with detailed analysis the motion error model is established and a data-driven MOCO flow chart for CSAR is proposed. The real CSAR data are used to verify the proposed method. |
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