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 本帖最后由 让时间说真话 于 2020-10-12 14:22 编辑 %% clc; clear all; theta=70;        %半功率角 m=-log10(2)/log10(cosd(theta)); P_LED=0.02; nLED=60; P_total=nLED*nLED*P_LED; I0=0.73; Ar=1e-4; Ts=1; index=1.5; FOV=60; R=0.53; G_Con=(index.^2)./(sind(FOV).^2); rho=0.8; lx=5; ly=5; lz=3; H=2.6; h=0.85; T1=[1,1,H]; T2=[4,1,H]; T3=[1,4,H]; T4=[4,4,H]; %% % x=linspace(0,5,24); y=linspace(0,5,24); [XR,YR]=meshgrid(x,y); D1=sqrt((XR-T1(1,1)).^2+(YR-T1(1,2)).^2+(H-h).^2); D2=sqrt((XR-T2(1,1)).^2+(YR-T2(1,2)).^2+(H-h).^2); D3=sqrt((XR-T3(1,1)).^2+(YR-T3(1,2)).^2+(H-h).^2); D4=sqrt((XR-T4(1,1)).^2+(YR-T4(1,2)).^2+(H-h).^2); cosphi1=(H-h)./D1; cosphi2=(H-h)./D2; cosphi3=(H-h)./D3; cosphi4=(H-h)./D4; receiver_angle1=acosd(cosphi1); H1=(m+1).*Ar.*cosphi1.^(m+1)./(2.*pi.*D1.^2); Pr1=P_total.*H1.*Ts.*G_Con; Pr1(find(abs(receiver_angle1)>FOV))=0;   receiver_angle2=acosd(cosphi2); H2=(m+1).*Ar.*cosphi2.^(m+1)./(2.*pi.*D2.^2); Pr2=P_total.*H2.*Ts.*G_Con; Pr2(find(abs(receiver_angle2)>FOV))=0; receiver_angle3=acosd(cosphi3); H3=(m+1).*Ar.*cosphi3.^(m+1)./(2.*pi.*D3.^2); Pr3=P_total.*H3.*Ts.*G_Con; Pr3(find(abs(receiver_angle3)>FOV))=0; receiver_angle4=acosd(cosphi4); H4=(m+1).*Ar.*cosphi4.^(m+1)./(2.*pi.*D4.^2); Pr4=P_total.*H4.*Ts.*G_Con; Pr4(find(abs(receiver_angle4)>FOV))=0; %% x1=linspace(0.2,4.8,10); y1=linspace(0.2,4.8,10); [XR1,YR1]=meshgrid(x1,y1); d1=sqrt((XR1-T1(1,1)).^2+(YR1-T1(1,2)).^2+(H-h).^2); d2=sqrt((XR1-T2(1,1)).^2+(YR1-T2(1,2)).^2+(H-h).^2); d3=sqrt((XR1-T3(1,1)).^2+(YR1-T3(1,2)).^2+(H-h).^2); d4=sqrt((XR1-T4(1,1)).^2+(YR1-T4(1,2)).^2+(H-h).^2); cosphip1=(H-h)./d1; cosphip2=(H-h)./d2; cosphip3=(H-h)./d3; cosphip4=(H-h)./d4; receiver_angle1=acosd(cosphip1); h1=(m+1).*Ar.*cosphip1.^(m+1)./(2.*pi.*d1.^2); Prp1=P_total.*h1.*Ts.*G_Con; Prp1(find(abs(receiver_angle1)>FOV))=0;   receiver_angle2=acosd(cosphip2); h2=(m+1).*Ar.*cosphip2.^(m+1)./(2.*pi.*d2.^2); Prp2=P_total.*h2.*Ts.*G_Con; Prp2(find(abs(receiver_angle2)>FOV))=0; receiver_angle3=acosd(cosphip3); h3=(m+1).*Ar.*cosphip3.^(m+1)./(2.*pi.*d3.^2); Prp3=P_total.*h3.*Ts.*G_Con; Prp3(find(abs(receiver_angle3)>FOV))=0; receiver_angle4=acosd(cosphip4); h4=(m+1).*Ar.*cosphip4.^(m+1)./(2.*pi.*d4.^2); Prp4=P_total.*h4.*Ts.*G_Con; Prp4(find(abs(receiver_angle4)>FOV))=0; %% Prp_1=[Prp1(1,:),Prp1(2,:),Prp1(3,:),Prp1(4,:),Prp1(5,:),Prp1(6,:),Prp1(7,:),Prp1(8,:),Prp1(9,:),Prp1(10,:)]; Prp_2=[Prp2(1,:),Prp2(2,:),Prp2(3,:),Prp2(4,:),Prp2(5,:),Prp2(6,:),Prp2(7,:),Prp2(8,:),Prp2(9,:),Prp2(10,:)]; Prp_3=[Prp3(1,:),Prp3(2,:),Prp3(3,:),Prp3(4,:),Prp3(5,:),Prp3(6,:),Prp3(7,:),Prp3(8,:),Prp3(9,:),Prp3(10,:)]; Prp_4=[Prp4(1,:),Prp4(2,:),Prp4(3,:),Prp4(4,:),Prp4(5,:),Prp4(6,:),Prp4(7,:),Prp4(8,:),Prp4(9,:),Prp4(10,:)]; for i=1:100 for n=1:24     for m=1:24         d(n,m)=sqrt((Prp_1(i)-Pr1(n,m)).^2+(Prp_2(i)-Pr2(n,m)).^2+(Prp_3(i)-Pr3(n,m)).^2+(Prp_4(i)-Pr4(n,m)).^2);     end end data=zeros(576,2); data(:,1)=[XR(1,:),XR(2,:),XR(3,:),XR(4,:),XR(5,:),XR(6,:),XR(7,:),XR(8,:),XR(9,:),XR(10,:),XR(11,:),XR(12,:),XR(13,:),XR(14,:),XR(15,:),XR(16,:),XR(17,:),XR(18,:),XR(19,:),XR(20,:),XR(21,:),XR(22,:),XR(23,:),XR(24,:)];                                    data(:,2)=[YR(1,:),YR(2,:),YR(3,:),YR(4,:),YR(5,:),YR(6,:),YR(7,:),YR(8,:),YR(9,:),YR(10,:),YR(11,:),YR(12,:),YR(13,:),YR(14,:),YR(15,:),YR(16,:),YR(17,:),YR(18,:),YR(19,:),YR(20,:),YR(21,:),YR(22,:),YR(23,:),YR(24,:)]; data1=zeros(100,2); data1(:,1)=[XR1(1,:),XR1(2,:),XR1(3,:),XR1(4,:),XR1(5,:),XR1(6,:),XR1(7,:),XR1(8,:),XR1(9,:),XR1(10,:)]; data1(:,2)=[YR1(1,:),YR1(2,:),YR1(3,:),YR1(4,:),YR1(5,:),YR1(6,:),YR1(7,:),YR1(8,:),YR1(9,:),YR1(10,:)]; % dd=zeros(100,576); dd(i,:)=[d(1,:),d(2,:),d(3,:),d(4,:),d(5,:),d(6,:),d(7,:),d(8,:),d(9,:),d(10,:),d(11,:),d(12,:),d(13,:),d(14,:),d(15,:),d(16,:),d(17,:),d(18,:),d(19,:),d(20,:),d(21,:),d(22,:),d(23,:),d(24,:)]; end [C,I]=sort(dd,2); %% for i=1:100     est1(i,:)=data(I(i,1),1:2);     RMSE1(i,1)=norm(est1(i,:)-data1(i,:)); end ave1=mean(RMSE1(:)); max1=max(RMSE1(:)); min1=min(RMSE1(:)); %%     for i=1:100          K=5;     match_result=data(I(i,(1:K)),1:2);%矩阵的行1-k，     est2(i,:)=mean(match_result);%得到knn     RMSE2(i,1)=norm(est2(i,:)-data1(i,:));%估计值与实际值的误差     ave2=mean(RMSE2(:));     max2=max(RMSE2(:));     min2=min(RMSE2(:));     %%       weight(i,:)=1./C(i,(1:K));%欧氏距离加权       weight(i,:)=((weight(i,:)).')./sum(weight(i,:),2);%归一化处理 end

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楼主| 发表于 2020-10-12 14:24:23 | 显示全部楼层
 最后一行的weight为什么转置不了？原来是100*5的，我需要的是5*100的矩阵

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 让时间说真话 发表于 2020-10-12 14:24 最后一行的weight为什么转置不了？原来是100*5的，我需要的是5*100的矩阵 你的weight根本没有初始化，你可以这么改： %% clc; clear all; theta=70;        %半功率角 m=-log10(2)/log10(cosd(theta)); P_LED=0.02; nLED=60; P_total=nLED*nLED*P_LED; I0=0.73; Ar=1e-4; Ts=1; index=1.5; FOV=60; R=0.53; G_Con=(index.^2)./(sind(FOV).^2); rho=0.8; lx=5; ly=5; lz=3; H=2.6; h=0.85; T1=[1,1,H]; T2=[4,1,H]; T3=[1,4,H]; T4=[4,4,H]; %% % x=linspace(0,5,24); y=linspace(0,5,24); [XR,YR]=meshgrid(x,y); D1=sqrt((XR-T1(1,1)).^2+(YR-T1(1,2)).^2+(H-h).^2); D2=sqrt((XR-T2(1,1)).^2+(YR-T2(1,2)).^2+(H-h).^2); D3=sqrt((XR-T3(1,1)).^2+(YR-T3(1,2)).^2+(H-h).^2); D4=sqrt((XR-T4(1,1)).^2+(YR-T4(1,2)).^2+(H-h).^2); cosphi1=(H-h)./D1; cosphi2=(H-h)./D2; cosphi3=(H-h)./D3; cosphi4=(H-h)./D4; receiver_angle1=acosd(cosphi1); H1=(m+1).*Ar.*cosphi1.^(m+1)./(2.*pi.*D1.^2); Pr1=P_total.*H1.*Ts.*G_Con; Pr1(find(abs(receiver_angle1)>FOV))=0;   receiver_angle2=acosd(cosphi2); H2=(m+1).*Ar.*cosphi2.^(m+1)./(2.*pi.*D2.^2); Pr2=P_total.*H2.*Ts.*G_Con; Pr2(find(abs(receiver_angle2)>FOV))=0; receiver_angle3=acosd(cosphi3); H3=(m+1).*Ar.*cosphi3.^(m+1)./(2.*pi.*D3.^2); Pr3=P_total.*H3.*Ts.*G_Con; Pr3(find(abs(receiver_angle3)>FOV))=0; receiver_angle4=acosd(cosphi4); H4=(m+1).*Ar.*cosphi4.^(m+1)./(2.*pi.*D4.^2); Pr4=P_total.*H4.*Ts.*G_Con; Pr4(find(abs(receiver_angle4)>FOV))=0; %% x1=linspace(0.2,4.8,10); y1=linspace(0.2,4.8,10); [XR1,YR1]=meshgrid(x1,y1); d1=sqrt((XR1-T1(1,1)).^2+(YR1-T1(1,2)).^2+(H-h).^2); d2=sqrt((XR1-T2(1,1)).^2+(YR1-T2(1,2)).^2+(H-h).^2); d3=sqrt((XR1-T3(1,1)).^2+(YR1-T3(1,2)).^2+(H-h).^2); d4=sqrt((XR1-T4(1,1)).^2+(YR1-T4(1,2)).^2+(H-h).^2); cosphip1=(H-h)./d1; cosphip2=(H-h)./d2; cosphip3=(H-h)./d3; cosphip4=(H-h)./d4; receiver_angle1=acosd(cosphip1); h1=(m+1).*Ar.*cosphip1.^(m+1)./(2.*pi.*d1.^2); Prp1=P_total.*h1.*Ts.*G_Con; Prp1(find(abs(receiver_angle1)>FOV))=0;   receiver_angle2=acosd(cosphip2); h2=(m+1).*Ar.*cosphip2.^(m+1)./(2.*pi.*d2.^2); Prp2=P_total.*h2.*Ts.*G_Con; Prp2(find(abs(receiver_angle2)>FOV))=0; receiver_angle3=acosd(cosphip3); h3=(m+1).*Ar.*cosphip3.^(m+1)./(2.*pi.*d3.^2); Prp3=P_total.*h3.*Ts.*G_Con; Prp3(find(abs(receiver_angle3)>FOV))=0; receiver_angle4=acosd(cosphip4); h4=(m+1).*Ar.*cosphip4.^(m+1)./(2.*pi.*d4.^2); Prp4=P_total.*h4.*Ts.*G_Con; Prp4(find(abs(receiver_angle4)>FOV))=0; %% Prp_1=[Prp1(1,:),Prp1(2,:),Prp1(3,:),Prp1(4,:),Prp1(5,:),Prp1(6,:),Prp1(7,:),Prp1(8,:),Prp1(9,:),Prp1(10,:)]; Prp_2=[Prp2(1,:),Prp2(2,:),Prp2(3,:),Prp2(4,:),Prp2(5,:),Prp2(6,:),Prp2(7,:),Prp2(8,:),Prp2(9,:),Prp2(10,:)]; Prp_3=[Prp3(1,:),Prp3(2,:),Prp3(3,:),Prp3(4,:),Prp3(5,:),Prp3(6,:),Prp3(7,:),Prp3(8,:),Prp3(9,:),Prp3(10,:)]; Prp_4=[Prp4(1,:),Prp4(2,:),Prp4(3,:),Prp4(4,:),Prp4(5,:),Prp4(6,:),Prp4(7,:),Prp4(8,:),Prp4(9,:),Prp4(10,:)]; for i=1:100 for n=1:24     for m=1:24         d(n,m)=sqrt((Prp_1(i)-Pr1(n,m)).^2+(Prp_2(i)-Pr2(n,m)).^2+(Prp_3(i)-Pr3(n,m)).^2+(Prp_4(i)-Pr4(n,m)).^2);     end end data=zeros(576,2); data(:,1)=[XR(1,:),XR(2,:),XR(3,:),XR(4,:),XR(5,:),XR(6,:),XR(7,:),XR(8,:),XR(9,:),XR(10,:),XR(11,:),XR(12,:),XR(13,:),XR(14,:),XR(15,:),XR(16,:),XR(17,:),XR(18,:),XR(19,:),XR(20,:),XR(21,:),XR(22,:),XR(23,:),XR(24,:)];                                    data(:,2)=[YR(1,:),YR(2,:),YR(3,:),YR(4,:),YR(5,:),YR(6,:),YR(7,:),YR(8,:),YR(9,:),YR(10,:),YR(11,:),YR(12,:),YR(13,:),YR(14,:),YR(15,:),YR(16,:),YR(17,:),YR(18,:),YR(19,:),YR(20,:),YR(21,:),YR(22,:),YR(23,:),YR(24,:)]; data1=zeros(100,2); data1(:,1)=[XR1(1,:),XR1(2,:),XR1(3,:),XR1(4,:),XR1(5,:),XR1(6,:),XR1(7,:),XR1(8,:),XR1(9,:),XR1(10,:)]; data1(:,2)=[YR1(1,:),YR1(2,:),YR1(3,:),YR1(4,:),YR1(5,:),YR1(6,:),YR1(7,:),YR1(8,:),YR1(9,:),YR1(10,:)]; % dd=zeros(100,576); dd(i,:)=[d(1,:),d(2,:),d(3,:),d(4,:),d(5,:),d(6,:),d(7,:),d(8,:),d(9,:),d(10,:),d(11,:),d(12,:),d(13,:),d(14,:),d(15,:),d(16,:),d(17,:),d(18,:),d(19,:),d(20,:),d(21,:),d(22,:),d(23,:),d(24,:)]; end [C,I]=sort(dd,2); %% for i=1:100     est1(i,:)=data(I(i,1),1:2);     RMSE1(i,1)=norm(est1(i,:)-data1(i,:)); end ave1=mean(RMSE1(:)); max1=max(RMSE1(:)); min1=min(RMSE1(:)); %% weight = zeros(100,5);     for i=1:100          K=5;     match_result=data(I(i,(1:K)),1:2);%矩阵的行1-k，     est2(i,:)=mean(match_result);%得到knn     RMSE2(i,1)=norm(est2(i,:)-data1(i,:));%估计值与实际值的误差     ave2=mean(RMSE2(:));     max2=max(RMSE2(:));     min2=min(RMSE2(:));     %%       weight(i,:)=1./C(i,(1:K));%欧氏距离加权       weight(i,:)=weight(i,:)/sum(weight(i,:));%归一化处理     end weight = weight.';

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