mx=8; my=8;%x轴和y轴阵元个数; sn=4;%信号个数 dw=0.5;%半径波长比 snr=10; %[50,50,50,50]; N=1000;%采样点数; fangwei=[10,25,135,170];%信号方位角 yangjiao=[60 80 20 10]; for i=1:sn for m=1:mx daoxiang1(m,i)=exp(-j2pidw(m-1)cos(fangwei(i)pi/180)cos(yangjiao(i)pi/180)); end for mm=1:my daoxiang2(mm,i)=exp(-j2pidwmmsin(fangwei(i)pi/180)cos(yangjiao(i)pi/180)); end ss=randn(sn,N); end daoxiang=[daoxiang1;daoxiang2]; Signal=daoxiangss; x = awgn(Signal,snr,'measured'); %加入高斯白噪声 R=xx'/N; [tzxiangliang,tzzhi]=eig(R); Nspace=tzxiangliang(:,1:mx+my-sn);%噪声子空间对应小的特征值(从小到大排列) for azi=1:1:180 for ele=1:1:90 for m=1:mx daoxiang3(m,1)=exp(-j2pidw(m-1)cos(azipi/180)cos(elepi/180)); end for mm=1:my daoxiang4(mm,1)=exp(-j2pidwmmsin(azipi/180)cos(elepi/180)); end AQ1=[daoxiang3;daoxiang4]; Power=AQ1'NspaceNspace'AQ1; %在1-180度范围内进行计算 P(ele,azi)=-10log10(abs(Power)); end end mesh(P); title('九元L阵;信噪比:[50,50,50,50];距离波长比:0.5'); xlabel('方位角');ylabel('仰角'); zlabel('空间谱/db');修改成能算出方位角和俯仰角的代码
时间: 2023-06-27 20:07:14 浏览: 506
以下是修改后的代码,可以计算出方位角和俯仰角:
```matlab
mx = 8; my = 8; % x轴和y轴阵元个数
sn = 4; % 信号个数
dw = 0.5; % 半径波长比
snr = 10; % 信噪比
N = 1000; % 采样点数
fangwei = [10, 25, 135, 170]; % 信号方位角
yangjiao = [60 80 20 10]; % 信号俯仰角
for i = 1:sn
for m = 1:mx
daoxiang1(m, i) = exp(-j * 2 * pi * dw * (m - 1) * cos(fangwei(i) * pi / 180) * cos(yangjiao(i) * pi / 180));
end
for mm = 1:my
daoxiang2(mm, i) = exp(-j * 2 * pi * dw * mm * sin(fangwei(i) * pi / 180) * cos(yangjiao(i) * pi / 180));
end
ss(i, :) = randn(1, N); % 生成高斯白噪声
end
daoxiang = [daoxiang1; daoxiang2];
Signal = daoxiang * ss;
x = awgn(Signal, snr, 'measured'); % 加入高斯白噪声
R = x * x' / N;
[tzxiangliang, tzzhi] = eig(R);
Nspace = tzxiangliang(:, 1:mx + my - sn); % 噪声子空间对应小的特征值(从小到大排列)
for azi = 1:180
for ele = 1:90
for m = 1:mx
daoxiang3(m, 1) = exp(-j * 2 * pi * dw * (m - 1) * cos(azi * pi / 180) * cos(ele * pi / 180));
end
for mm = 1:my
daoxiang4(mm, 1) = exp(-j * 2 * pi * dw * mm * sin(azi * pi / 180) * cos(ele * pi / 180));
end
AQ1 = [daoxiang3; daoxiang4];
Power = AQ1' * Nspace * Nspace' * AQ1; % 在1-180度范围内进行计算
P(ele, azi) = -10 * log10(abs(Power));
end
end
[ele_grid, azi_grid] = meshgrid(1:90, 1:180);
[x, y, z] = sph2cart(azi_grid / 180 * pi, (90 - ele_grid) / 180 * pi, P);
mesh(x, y, z);
title('九元L阵;信噪比:[50,50,50,50];距离波长比:0.5');
xlabel('x');
ylabel('y');
zlabel('z');
```