一种新的ISARFS成像运动补偿方法

A novel target motion compensation method for stepped frequency ISAR imaging

提出了一种新的用于步进频率ISAR成像运动补偿的方法.它利用常载频低分辨信号对运动目标进行跟踪,并利用回波解卷绕的相位获取目标较为精确的运动参数,利用高分辨步进频率回波信号精确地估计了目标运动参数,理论分析和仿真结果证明了所提出方法的有效性.

A novel method for target motion compensation of stepped frequency ISAR imaging is presented. This method uses the low resolution targets echo with a constant carrying frequency to estimate a coarse target motion parameters. Targets motion parameters with a preferable accuracy are achieved by the unwrapped phase history of the targets echo of the low resolution signatures and then targets motion parameters with high accuracy are obtained by stepped frequency high resolution signatures. Finally, the effectiveness of this method is shown by the theoretical analysis and the results of computer simulation.