提出一种利用信号的时域信息来改善空域波达方向估计性能的简化方法.该方法对在空域靠得很近的目标,先在空域做波束合成,确定它们的大致方向,然后在时域估计其多普勒频率,并利用投影的方法在多普勒域将目标加以区分,再在空域依次确定目标的波达方向.该方法不需迭代,运算量小,且在低信噪比和存在空域误差时仍能保持良好的性能.Monte-Carlo 实验验证了该方法的有效性. This paper proposes a simplified method to improve the spatial DOA estimation performance by using the signal’s time-domain information. In this method, aiming at the target close to the airspace, beam synthesis is first performed in the airspace to determine their general direction, The Doppler frequency is estimated, and the target is distinguished in the Doppler domain by using the projection method, and then the DOA of the target is determined in the airspace.This method does not require iteration and the computation is small, In the presence of airspace error, good performance can be maintained. The Monte Carlo experiment verifies the effectiveness of the proposed method.