极化SAR动目标定位中的残差图像干涉相干性分析
doi: 10.3724/SP.J.1146.2007.01790
Analysis of the Interferometric Coherence between Residule Images in Location of Moving Target with Polarimetric SAR
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摘要: 该文研究极化SAR动目标检测及定位中的频域残差图像干涉相干性优化问题。给出了多普勒频域杂波对消处理的基本流程,提出了一种利用频域残差图像进行最优极化干涉处理从而提高目标运动参数估计精度的方法。结合最优极化干涉理论,通过仿真分析研究了不同极化下频域残差图像的干涉相干性,验证了文中方法的有效性。Abstract: This paper mainly deals with the optimal inteferometric coherence of the residual images in frequency domain in detection and location of moving target with polarimetric SAR. The essential procedure of clutter cancellation in doppler frequency is presented. A novel method for improving the estimated accuracy of the motion parameters is proposed by taking the optimal polarimetric interferometry processing with residual images in frequency domain. Referring to the theory of optimal polarimetric interferometry, the interferometric coherences of the residual images with different polarization are analyzed. Simulation results show the effectiveness of proposed method.
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