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《Journal of Data Acquisition and Processing》 2011-04
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Clutter Compensation Approach to Earth's Rotation for Side-Looking Space-Based Radar

Liu Jinhui,Liao Guisheng,Li Ming(National Laboratory for Radar Signal Processing,Xidian University,Xi'an,710071,China)  
The earth's rotation widens the Doppler frequency distribution of the ground clutter,and makes the clutter covariance matrix estimation inaccurate.Then it brings a great challenge to the clutter rejection of STAP method in side-looking space-based radar(SBR).Therefore,a clutter compensation method is proposed to solve the problem.The method measures the earth's rotation by using the SBR orbit parameter,and then compensates the clutter Doppler frequency.The method can mitigate the influence of the clutter Doppler frequency distribution which is widened by the earth's rotation and improve the ability of clutter rejection in SBR system.The method can also be efficient when the orbit inclination angle error exists.Finally,the computer simulation results verify the validity of the proposed approach.
【Fund】: 国家自然科学基金(60736009)资助项目;; 国家杰出青年科学基金(60825104)资助项目
【CateGory Index】: TN959.73
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