4 January 2006 Moving target parameter estimation of SAR after two looks cancellation
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Proceedings Volume 5985, International Conference on Space Information Technology; 59852N (2006) https://doi.org/10.1117/12.657699
Event: International Conference on Space information Technology, 2005, Wuhan, China
Abstract
Moving target detection of synthetic aperture radar (SAR) by two looks cancellation is studied. First, two looks are got by the first and second half of the synthetic aperture. After two looks cancellation, the moving targets are reserved and stationary targets are removed. After that, a Constant False Alarm Rate (CFAR) detector detects moving targets. The ground range velocity and cross-range velocity of moving target can be got by the position shift between the two looks. We developed a method to estimate the cross-range shift due to slant range moving. we estimate cross-range shift by Doppler frequency center. Wigner-Ville Distribution (WVD) is used to estimate the Doppler frequency center (DFC). Because the range position and cross range before correction is known, estimation of DFC is much easier and efficient. Finally experiments results show that our algorithms have good performance. With the algorithms we can estimate the moving target parameter accurately.
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Rongbing Gan, Jianguo Wang, Xiang Gao, "Moving target parameter estimation of SAR after two looks cancellation", Proc. SPIE 5985, International Conference on Space Information Technology, 59852N (4 January 2006); doi: 10.1117/12.657699; https://doi.org/10.1117/12.657699
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