自适应波束形成技术是移动通信和信号处理领域中的热点,文中比较了自适应波束形成中的两种恒模算法-随机梯度恒模算法和最小二乘恒模算法,发现在弱干扰环境下,两者性能相当;而在强干扰环境下,最小二乘恒模算法通常会收敛于功率较强的信号而产生错捕;而随机梯度恒模算法则通过对步长因子的控制可以有效地捕获用户信号。 Adaptive beamforming is a hotspot in the field of mobile communications and signal processing. In this paper, we compare two constant modulus algorithms in adaptive beamforming-stochastic gradient constant modulus algorithm and least squares constant modulus algorithm. It is found that in the weak interference environment , Both of them have the same performance. In the strong interference environment, the least square constant modulus algorithm usually converges to the more powerful signal to generate the wrong catch. However, the stochastic gradient constant modulus algorithm can control the step size effectively Capture user signal.