SMI方向图和性能(波束形成算法，自己修改）

优点： 收敛速度快

缺点：1 当阵元输出含有较强的期望信时，或者期望信号与干扰信号相关时，性能急剧下降.2 由于权向量含有方向矢量，因此对阵列的幅相差非常敏感；3 ,期望信号的功率不能过大，比干扰信号相差几十dB，也就是说，在小期望信号、大干扰信号情况下，也可进行SMI处理。



-SMI pattern and performance (beamforming algorithm, make changes to)

Advantages: fast convergence

Disadvantages: 1 output when the array elements with strong expectations of the letter, or related to the desired signal and interference signals, the performance sharply .2　direction vector containing the weight vector, so the array is very sensitive to the amplitude difference　3, the desired signal The power can not be too large, than the difference between the scores of interference signal dB, that is, in the small desired signal, large signal interference case, SMI can also be handled.