Pan Runhong, Ma Pingqing, Zhu Xixing, Chai Zhenming. A RESEARCH OF SAR MOVING TARGETS IMAGING BY JOINT TIME-FREQUENCY ANALYSIS[J]. Journal of Electronics & Information Technology, 1998, 20(3): 392-396.
Citation:
Pan Runhong, Ma Pingqing, Zhu Xixing, Chai Zhenming. A RESEARCH OF SAR MOVING TARGETS IMAGING BY JOINT TIME-FREQUENCY ANALYSIS[J]. Journal of Electronics & Information Technology, 1998, 20(3): 392-396.
Pan Runhong, Ma Pingqing, Zhu Xixing, Chai Zhenming. A RESEARCH OF SAR MOVING TARGETS IMAGING BY JOINT TIME-FREQUENCY ANALYSIS[J]. Journal of Electronics & Information Technology, 1998, 20(3): 392-396.
Citation:
Pan Runhong, Ma Pingqing, Zhu Xixing, Chai Zhenming. A RESEARCH OF SAR MOVING TARGETS IMAGING BY JOINT TIME-FREQUENCY ANALYSIS[J]. Journal of Electronics & Information Technology, 1998, 20(3): 392-396.
Some probles about SAR moving targets imaging by joint time-frequency analysis are discussed in this paper.Three kinds of time-frequency transforms--Short Time Fourior Transform(STFT),Wavelet Transform(WT) and Wigner-Ville Distribution (WVD) are compared.It is presented that only WVD could meet the requirement.Moveover,Hough Transform(HT) is employed in restraining the distribing corss terms,rpoduced by the WVD due to its bilinear property.Experiments test that the combined WVD and HT could provide satisfactory detection performance even if the signal-to-noise rato is very low.
Freeman A, Currie A. A synthetic aperture radar and moving targets. GEC Journal of Research, 1987, 5(2): 106-115.[2]Barbarossa S, Zanalda A. A Conbined Wigner-Ville and Hough transform for crossterms suppression and optimal detection and parameter estimation, ICASSP92, Mar., 1992, San Francisco: 173-176.[3]刘贵忠,刘志梅.一种新的二次时频分布和几种主要二次时频分布的比较研究.电子科学学刊,1996, 18(5): 455-461.[4]王韬.SAR运动目标检测、成象方法的研究:[硕士学位论文].北京:中国科学院电子学研究所,1995.
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