1、N=1000; %采样点数n=0:N-1;f=1000; %频率fs=10*f; %采样频率c=1500; %声速lamd=c/f; %波长%d=lamd/2; %阵元间距d=0.7*lamd;sita0=80*pi/180; %期望方向sita1=80*pi/180; %目标1方位sita2=100*pi/180; %目标2方位sita3=225*pi/180; %目标3方位snr1=20; %信噪比snr2=20;snr3=20;s1=exp(-j*(2*pi*f*n/fs+2*pi*rand(1,N);s2=exp(-j*(2*pi*f*n/fs+2*pi*rand(1,N);s3=ex
2、p(-j*(2*pi*f*n/fs+2*pi*rand(1,N);s=s1;s2;s3;a0=exp(-j*2*pi*f*m*d*cos(sita0)/c);u0=1 cos(sita0) sin(sita0).Av0=kron(a0,u0);a1=exp(-j*2*pi*f*m*d*cos(sita1)/c);a2=exp(-j*2*pi*f*m*d*cos(sita2)/c);a3=exp(-j*2*pi*f*m*d*cos(sita3)/c);u1=1 cos(sita1) sin(sita1).u2=1 cos(sita2) sin(sita2).u3=1 cos(sita3) sin
3、(sita3).Av=kron(a1,u1) kron(a2,u2) kron(a3,u3);%有噪声S1=awgn(Av(:,1)*s1,snr1,measured,db);S2=awgn(Av(:,2)*s2,snr2,S3=awgn(Av(:,3)*s3,snr3,S=S1+S2;%+S3;R=S*S/N;step=1;Ang=0:step:360;se=zeros(N,length(Ang);A=zeros(3*M,0);for kk=1:length(Ang) u=1 cos(Ang(kk)*pi/180) sin(Ang(kk)*pi/180) a=kron(exp(-i*(2*m*pi*f*d*cos(Ang(kk)*pi/180)/c),u); Pc(kk)=a*R*a;endfigure(1);plot(Ang,10*log10(abs(Pc)/max(abs(Pc);%,LineWidth,2);grid on;axis(0 360 -35 0);xlabel(方位(o)ylabel(归一化功率(dB)