七单元天线阵MUSIC DOA估计：

d=1 ， 天线阵元的间距；

lma=2， 信号中心波长；

四输入信号；

A=[A1,A2,A3,A4]， 得出A矩；

四信号的频率d=[1.3*cos(v1*n)

1*sin(v2*n)

1*sin(v3*n)

1*sin(v4*n)]

构造输入信号矢量

U=A*d

总的输入信号

总输入信号的协方差矩阵

[s,h]=eig(c)

求协方差的特征矢量及特征值

取出与零特征值对应的特征矢量

求协方差矩阵的逆矩阵

应用Music法估计输出

绘出各波达方向图-Seven-element antenna array MUSIC DOA estimates: d = 1,　Antenna Array pitch　LMA = 2　signal center wavelength　four input signals　A = [A1, A2, A3, and A4],　drawn A moment　　tetra-frequency of the signal D = [1.3* cos (V1* n)　1* ⁢　sin (v2* n)　1* sin (v3* n)　1* sin (V4* n)]　 constructed input signal vector U = A* D　 of the total input signal　 of the total input signal covariance matrix [S] = EIG (c)　 seeking covariance feature vector and the feature value removing and corresponding to the zero eigenvalues ​ ​ characterized vector　seeking covariance matrix inverse matrix　Applications Music estimate output　plotted DOA Figure