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PDA、FDA MATLAB代码

%---------------------------------------- %功能:FDA和相控阵天线方向图 %版本:ver1.0 %时间:2017.11.1 %--------------------------------------- clear all; clc; disp('相控阵天线方向图请输入：1'); disp('频控阵天线方向图请输入：0'); flag=input('输入：'); close all; %相控阵天线方向图 if flag == 1     disp('%相控阵天线方向图');     N = 12;     alfa = -160*pi/180:0.1*pi/180:160*pi/180;     beta = 0*pi/180;     len = length(alfa);     falfabeta = zeros(1, len);     for i=1:len         if abs( sin(alfa(i)) - sin(beta) )<= 1e-6;             falfabeta(i) = N;             continue;         else             falfabeta(i) = sin( N*pi/2*( sin(alfa(i)) - sin(beta) ) )/sin( pi/2*( sin(alfa(i)) - sin(beta) ) );         end     end     alfa = alfa*180/pi;     figure;     plot(alfa, falfabeta);     title('未归一相控阵方向图');     ylabel('幅度');     xlabel('方位角(°)'); ​     fimagesec = falfabeta;     falfabeta = abs(falfabeta/max(abs(falfabeta)));     figure;     plot(alfa, falfabeta);     title('归一化相控阵方向图');     ylabel('归一化幅度');     xlabel('方位角(°)');     figure;     title('相控阵方向图');     x=[-60 60];     y=[-4 12];     clims = [-3 N];     imagesc(x,y,fimagesec,clims);     colormap(jet);     colorbar     figure;     falfabeta = N*falfabeta;     clims = [0 N];     imagesc(x,y,falfabeta,clims);     colormap(jet);     colorbar else      disp('%频控阵天线方向图');     N = 12;%调节线条粗细     alfa = -80*pi/180:0.01:80*pi/180;     len = length(alfa);     range = 20e4-1:-(20e4/len):0;     falfabeta = zeros(len, len);     f0 =10e9;     c  = 3e8;     d  = c/(2*f0);     deltaf = 3e3;     t = 0;     for i=1:len         for j=1:len             if abs(sin( pi*( deltaf*t - deltaf*range(i)/c  + sin(alfa(j))/(2)  ) )) <= 1e-6 ;                 falfabeta(i,j) = N;                 continue;             else               falfabeta(i,j) = abs(sin( N*pi*( deltaf*t - deltaf*range(i)/c - sin(alfa(j))/2  ) )...                  / sin( pi*( deltaf*t - deltaf*range(i)/c - sin(alfa(j))/2  ) )) ;             end         end     end %     figure,polar3d(alfa, range,(falfabeta));     figure;     mesh(alfa,range,(falfabeta));     figure;     x=[-80 80];     y=[1 2e4];     clims = [-3 N];     imagesc(x,y,falfabeta,clims);     colormap(jet);     colorbar end ​ ​

PDA、FDA MATLAB仿真结果

PDA相控阵

FDA频控阵