一种自适应阵列指向误差校正方法

在自适应阵列处理中，指向误差将使阵列处理性能严重下降，必须进行校正。在分析指向误差对自适应波束形成性能影响的基础上，提出一种利用阵列接收数据和指向误差不确定度的指向误差校正方法，通过牛顿法迭代求解用于修正阵列导向矢量的因子，然后进行自适应波束形成。理论分析和仿真结果表明：新方法对指向误差具有较好的鲁棒性。

A Calibration Method of Steering Errors in Adaptive Array

In conventional adaptive array processing, the array processing performance will be degraded seriously because of the steering error, which must be calibrated. Based on the analysis of the effect of steering errors on adaptive beam -forming performance, a new method of calibrating the errors is presented, in which the array data and the uncertainty of the steering errors are utilized for iteratively computing the factor used in modifying the array steering vector. Adaptive beam -forming is performed with the calibrated steering vector. The theoretical analysis and simulation results show that the new method is better in robustness to the steering errors.