针对方位多通道系统通道间不平衡及通道误差会降低成像质量问题,文中提出了一种在时域上方位向互相关的校正方法,该方法将接收到的每个通道的信号在时域上与参考通道方位向互相关,求取通道相位误差,在保证成像质量的同时,与之前的方法相比提升了运行效率。仿真结果和高分三号实测数据的处理结果验证了该方法的有效性。

Channel imbalance is one of research priorities of multichannel radar system all the time. The channel error can degrade the quality of the final image. To deal with the problem, a correction method based on cross correlation on time domain is presented in this paper. In this method, the phase error can be estimated through applying the azimuth cross correlation operation between each channel with reference channel on time domain. This method, compared with the method proposed previously, increase operating efficiency while ensuring imaging quality. The simulation results and process results of measured data of GF-3 DRC mode verifies the validity of this method.

TN957. 52

国家高分重大专项计划和国家重点研发计划(2017YEB0502700)