DOA.zip_DOA_augmented array_l型阵列_二维DOA_增广矩阵束

% % Developed by xiaofei zhang (南京航空航天大学 电子工程系 张小飞） % EMAIL:[email protected] clear all close all derad = pi/180; radeg = 180/pi; twpi = 2*pi; kelmx = 8; kelmy = 10; % dd = 0.5; %  dx=0:dd:(kelmx-1)*dd; %  dy=0:dd:(kelmy-1)*dd; iwave = 3; % number of DOA L=iwave; theta1 = [10 30 50]; theta2 = [15 35 55]; snr = 20;% input SNR (dB) n = 200; % Ax=exp(-i*twpi*dx.'*(sin(theta1*derad).*cos(theta2*derad))); Ay=exp(-i*twpi*dy.'*(sin(theta1*derad).*sin(theta2*derad)));%%%% direction matrix S=randn(iwave,n); X0=Ax*S; X=awgn(X0,snr,'measured'); Y0=Ay*S; Y=awgn(Y0,snr,'measured'); Rxy=X*Y'; P=5; Q=6; Re=[]; for kk=1:kelmx-P+1 Rx=[]; for k=1:P Rx=[Rx;R_hankel(k+kk-1,Rxy,kelmy,Q)]; end Re=[Re,Rx]; end [Ue,Se,Ve] = svd(Re); Uesx=Ue(:,1:L); Uesx1=Uesx(1:(P-1)*Q,:); Uesx2=Uesx(Q+1:P*Q,:); Fx=pinv(Uesx1)*Uesx2; [EVx,Dx]=eig(Fx); EVAx=diag(Dx).'; for im=1:Q Uesy(((im-1)*P+1):P*im,:)=Uesx(im:Q:(im+Q*(P-1)),:); end Uesy1=Uesy(1:(Q-1)*P,:); Uesy2=Uesy(P+1:P*Q,:); Fy=pinv(Uesy1)*Uesy2; [EVy,Dy]=eig(Fy); EVAy=diag(Dy)'; F=0.5*Fx+0.5*Fy; [EV,D]=eig(F); P1=EV\EVx; P2=EV\EVy; P1=abs(P1); P2=abs(P2); P11=P1'; P21=P2'; [c,Px]=max(P11); [cc,Py]=max(P21); EVAx=EVAx(:,Px); EVAy=EVAy(:,Py); theta10=asin(sqrt((angle(EVAx)/pi).^2+(angle(EVAy)/pi).^2))*radeg theta20=atan(angle(EVAy)./angle(EVAx))*radeg