多输入多输出雷达发射阵列误差联合校正方法

Joint calibration technique for the transmitting array calibration for multiple-input multiple-output radar

针对多输入多输出雷达发射阵列提出了一种同时校正阵元位置误差、幅相误差和阵元互耦的新方法.该方法首先通过多次旋转天线阵列进行采样,获得来自多个方位的实验数据,然后对数据的协方差矩阵进行特征分解,得到实际阵列流型的估计值并构造代价函数,最后通过迭代算法估计所有的误差参数,并对误差进行校正.计算机仿真及实际天线阵列的校正实验均验证了该方法的有效性.

A novel method of calibrating sensor position errors,gain-phase errors and mutual coupling uncertainties for the transmitting array of the multiple-input multipleoutput radar is proposed.Firstly,the experiment data from multiple directions is obtained by rotating the antenna array multiple times to sample,then the flow pattern the actual array is calculated by the characteristic decomposition for the covariance matrix,and the cost function is also created,finally,all the error parameters are estimated by the iteration algorithm and corrected.The computer simulation and experiment results of the actual antenna array demonstrate that the algorithm is effective and practical.