A Method to Reduce the Effect of 2-D Sampling Error on Pol-SAR Imagery
Wang Shuo①②,Yu Wei-dong①,Qi Hai-ming①
①Institute of Electronics, Chinese Academy of Science, Beijing 100080, China; ②Graduate University of Chinese Academy of Science, Beijing 100039, China
Abstract：Analog SAR echoes are usually sampled in both azimuth and range for digital processing, which will introduce error to point target peak measurements. This problem is analyzed in detail and the theoretical relationship between peak error and target location is given. For time-divided mode polarimetric SAR systems, azimuth sampling will also introduce relative error between different polarization data. A match-filtering method is proposed, which uses different time-delayed filtering functions for different polarization data, to produce the same effect of azimuth sampling on them. Simulation results prove its effectiveness in improving the magnitude and phase consistency.
王朔,禹卫东,祁海明. 一种去除采样造成的多极化SAR成像误差的方法[J]. 电子与信息学报, 2010, 32(2): 490-494 .
Wang Shuo①②,Yu Wei-dong①,Qi Hai-ming①. A Method to Reduce the Effect of 2-D Sampling Error on Pol-SAR Imagery. , 2010, 32(2): 490-494 .
2010, Vol. 32 
