基于频域DPCA的星载SAR动目标检测、测速与定位

An Algorithm of Moving Targets Detection,Radial Velocity Estimation and Relocation on Spaceborne SAR Based on Frequency Domain DPCA

给出基于频域DPCA的星载合成孔径雷达 (SAR)动目标检测、测速及定位的实现方法。首先建立星载SAR沿航迹向三孔径天线空间几何模型 ,并详细分析星载SAR三孔径天线机理及信号特性 ,然后分析并推导基于频域DPCA实现对地面背景杂波淹没的运动目标检测、径向速度分量估计以及目标定位的方法。最后 。

An algorithm of Spaceborne SAR moving target detection,radial velocity estimation and relocation based on frequency domain DPCA (Displaced Phase Center Antenna)is presented.Firstly,spatial geometric model of three-antenna with linear along-track arrangement spaceborne SAR is established,with that its principle and signal properties are analyzed,then a spaceborne SAR/GMTI algorithm is analyzed and derived based on frequency domain DPCA technique. This algorithm can perform the detection,radial velocity estimation and relocation of moving targets masked by ground clutters.Finally,the computer simulation results validate its effectiveness.