一种分布式阵列波达方向估计方法

摘要

针对分布式MIMO雷达中的DOA估计问题,提出一种基于分布式子阵列作为发射,密布阵作为接收的DOA估计方法.发射阵元间隔为接收孔径大小.利用发射作为辅助提高阵列自由度,扩展阵列孔径,推导了DOA估计的过程.与密布阵MIMO雷达不同,在空间分集MIMO雷达中提高自由度并扩展阵列孔径.仿真结果表明了算法的正确性和有效性.%For estimation of DOA of MIMO radar, a new method is proposed by uaing transmit subarrays widely separated and a receive array with the receive elements closely spaced. The spacing between transmit sensors is equal to the aperture of receive array. And the process are deduced to combine all estimations with the assistant of transmit. Compared with colocated MIMO radar, the array aperture and degrees of freedom are improved in spatial diversity MIMO radar, and the simulation results show that the proposed algorithms is effective.