合成孔径雷达多波速通道间相位误差研究

Study of SAR Multibeam Interchannel Phase Errors

通过点目标成像方式,分析了合成孔径雷达(SAR)多波束通道间相位误差及其对合成孔径雷达成像性能的影响,给出了计算机仿真结果,指出各种通道间相位误差都将引起方位向压缩波形主瓣展宽、峰值下降,且方位向压缩波形主瓣两侧出现虚假目标;同时给出了在系统硬件方面以及成像处理中减小通道间相位误差的一些措施.

This paper presented the analysis of high-resolution Synthetic Aperture Radar （SAR） multibeam interchannel phase errors and their influence on SAR image performance as well as the computer simulation results via point target imaging. It shows that the interchannel phase errors result in main lobe widening of azimuth compression diagram, peak value declining and false target on both sides of main lobe of azimuth compression diagram. Besides, this paper presents some means to decrease the interchannel phase errors via system hardwares and imaging algorithm.