一种基于FrFT的三通道SAR动目标检测与成像算法

Three-channel SAR Moving Targets Detection and Imaging Algorithm Based on FrFT

本文分析了运动目标对SAR成像的影响.首先,建立了三通道SAR对多个运动目标检测的模型,该模型利用DPCA技术进行动目标检测;然后提取检测出的动目标信息,并结合Fr FT对动目标运动参数进行估计,实现对动目标的定位、测速;最后根据估计出的参数修正参考函数对动目标进行成像.通过仿真实验验证了该算法的可行性.

This paper analyzes the influence of moving targets for SAR imaging. Firstly, a moving targets detection model for three-channel SAR is proposed, which adopts DPCA to detect the moving targets. Then the information of the detected moving targets is extracted, based on which the FrFF is utilized to estimate the target motion parameters, performing the targets location and the speed calculation. Finally, tile reference function is revised, based on those estimated parameters, to image the moving targets. The results of simulation experiments demonstrate the effectiveness of our algorithm.