提出了一种基于多输入多输出雷达的收发两级空时自适应处理(STAP)算法。收发两级STAP 与收发联合STAP 不同在于:分别对等效发射端与接收端进行空时处理,从而达到降低运算量效果。文中给出收发两级STAP 所构造的协方差矩阵与收发联合STAP 协方差矩阵关系,并且给出输出信杂噪比(SCNR)表达式。从仿真结果看,收发两级法SCNR 性能与收发联合STAP 相近,且计算量有明显降低。此外,收发两级STAP 也可应用到收发联合降维算法中,得到与收发联合降维算法一样的性能,且运算量进一步降低。

A transmitter-receiver-two-stage space time adaptive processing ( STAP) for multiple input multiple output ( MIMO) radar is proposed in this paper. The different between transmitter-receiver-two-stage STAP and transmitter-receiver-joint STAP is that solving equivalent transmitters and receiver data respectively, in order to reduce the amount of computation. A relationship between two-stage STAP covariance and joint STAP is given, and an analytical expression for signal-clutter-noise ratio ( SCNR) is derived in this paper. From simulation results, the two-stage STAP has a similar performance with transmitter-receiver-joint STAP, and reduces computation. Furthermore, the two-step STAP can be used in the traditional reduced dimension algorithms to obtain less calculation.

TN958

国家自然科学基金资助项目(61671139);国家自然科学基金资助项目(61401062);电子信息控制重点实验室基金资助项目