多波段SAR系统动目标检测和参数优化设计

针对传统单通道合成孔径雷达(SAR)动目标检测中存在的不足，提出了一种基于多波段的单通道SAR运动目标检测方法，该方法对方位抽取得到的两个等效通道数据进行杂波抑制，然后结合Keystone方法实现动目标的检测、参数估计与定位．并提出了多波段SAR系统参数优化设计的方法，该方法可以克服传统动目标检测系统中的速度盲区问题，从而有效提高波段的利用率和动目标的检测概率．仿真实验验证了所提方法的有效性和可行性．

Moving target detection in the multi-band SAR system and parameter optimization

To overcome the shortcomings of the conventional method for moving target detection in single-channel SAR, a method for moving target detection in single-channel multi-band SAR is presented. In this method, the stationary clutter could be eliminated by using the data of the equivalent dual-channel, which is constructed by desampling the original SAR data in the azimuth direction. Then moving target detection, parameter estimation and location are accomplished with the Keystone method. Moreover, a parameter optimization method in the multi-band SAR system is presented, which could solve the problem of blind area in the velocity detectable in the traditional SAR moving target detection system. As a result, the bands utilization and moving target detectable alarm increases greatly. Finally, simulation results are presented to demonstrate the effectiveness and feasibility of the proposed method.