提出了一种子阵间约束自适应和差单脉冲测角算法.该方法先联合各子阵和波束输出进行自适应处理,形成合成的自适应和波束,再对各子阵差波束输出进行自适应处理并同时约束单脉冲比,得到合成的约束差波束.由于在差波束自适应权形成中增加了全阵列单脉冲比约束,新方法自适应抑制主副瓣干扰的同时还能较好地保持单脉冲比不失真,并克服了子阵自适应处理带来的孔径损失,提高了目标角度的估计精度.计算机仿真实验证明了该方法的有效性. A subarray adaptive constraint and a poor single pulse angular measurement algorithm are proposed in this paper.The algorithm firstly combines the subarray and beam output adaptively to form the synthesized adaptive beam and the beam, Adaptive processing and at the same time restraining the single pulse ratio to obtain the synthesized constrained difference beam.Because of adding the full array single-pulse ratio constraint in the formation of the adaptive beamforming of the difference beam, the new method can adaptively suppress the main and sidelobe interferences, The single pulse ratio is not distorted, and the aperture loss caused by subarray adaptive processing is overcome, and the estimation accuracy of the target angle is improved. The computer simulation experiment proves the effectiveness of the method.