UWB-MIMO穿墙雷达三维成像与运动补偿算法研究

该文提出一种适用于超宽带MIMO稀疏阵列的Kirchhoff迁移成像和运动补偿方法。该方法将传统Kirchhoff积分方程引入到MIMO阵列中，并利用后向格林函数替代前向格林函数来解决小阵列大视场的问题。另外，在通过微波开关切换分时复用的方式来采集接收单元回波数据的同时，增加1个参考通道直接采集参考单元的回波信号来估计运动目标的位置变化信息，对MIMO通道的数据进行运动补偿后再进行3D成像，有效避免了因目标运动导致的散焦和成像结果偏移真实位置的问题。

Study on 3D Imaging and Motion Compensation Algorithm for UWB-MIMO Through-wall Radar

A motion compensation method based on Kirchhoff migration imaging algorithm for MIMO array is proposed. In the method, the traditional Kirchhoff intergral equation is introduced into the MIMO array and the forward Green function is replaced by the backward Green function to solve the problem of the large view field of the small array. The echo signal of the reference unit is directly recieved by adding a reference channel to estimate the position change information of the moving target, while the signal of the receiving units is sampled through the microwave switch time divition multiplexing. Then 3D imaging is performed after motion compensation for the data of the MIMO channel, which avoids effectively the problem of defocusing due to target migration and the deviation of the imaging result from the real position.