基于空时自适应处理的阵列测向算法

摘要

提出了一种基于空时自适应处理( STAP)的阵列信号测向算法，与常规的空间域阵列信号处理相比，该方法由于联合了空间-时间维进行处理，增大了系统自由度，从而提高了处理信号增益以及空时谱分辨率，并且能够在不需要预先精确获得信号频率的前提下获得信号的波达方向估计( DOA)。仿真实验结果验证了该方法的有效性。%A method based on space-time adaptive processing ( STAP ) for direction of array ( DOA) is proposed. The Data samples are achieved by time sliding operations, and the DOA is got by space-time adaptive processing method. Compared with the conventional methods, the system liberty is improved with the proposed method by combining temporal and spatial informa-tion. As a result, the space-time-sparta resolution and the gain of the signal processing can be improved better, mean while, the DOA result could be obtained without knowing the frequency of the signal. The simulation results show validity of the method.