MIMO雷达子阵级m-Capon方法研究

针对多输入多输出（multiple input multiple output, MIMO）雷达虚拟阵列孔径大，典型的降维空时自适应处理（space time adaptive processing, STAP）方法--m-Capon法无法适用的问题，对子阵级m-Capon法进行了研究，并与相应的相控阵雷达3-Capon方法进行了比较。计算机仿真结果表明，处理器维数相同时，子阵级3-Capon方法性能明显提高，但非主杂波区误差鲁棒性差；子阵级1-Capon法在非主杂波区性能明显提高，但主杂波凹口太宽。在实际应用中，可综合运用两种方法对主杂波和非主杂波区分开处理，为工程实现提供可靠依据。

Study of subarray domain m-Capon method for MIMO radar

As the multiple input multiple output (MIMO) radar has a large virtual aperture in spatial domain. Therefore, the conventional reduced rank space time adaptive processing（STAP）method,  e.g., the m-Capon method, is not practicable due to its large degree of freedom （DOF）. The sub array domain m-Capon method is addressed. Computer simulation results show that the sub array domain  3-Capon method has better performance compared with its counter part, the phased array radar, with the same processor DOF. However, it has insufficient robustness to the array error in side lobe clutter section. The sub array domain 1-Capon method has obviously better performance compared with the phased array radar in side lobe clutter section. While its’ main clutter null is too wide. In real applications, these two methods could be alternatively used in the main and side lobe clutter sections, which can provide the solid theory for the engineering realization.