please help me in my back projection algorithm.

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Mansour Aljohani 2016-9-17

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https://ww2.mathworks.cn/matlabcentral/answers/303375-please-help-me-in-my-back-projection-algorithm

评论： Mansour Aljohani 2016-9-26

AAA.mat

Dear All, the attached file is for the Cross-correlation between the TX and RX. and my target is one rod. what i am trying to do in my code is backprojection in time domain not in frequency domain in order to get the target image. but it is not work. I do not know if it is from the data or the algorithm. if anyone has information please let me know. Thank you so much in advance.

load AAA
for Theta = 0:360
    Current_Range = AAA(:,Theta+1);
    Current_Image = zeros (41,41);
    iii = 0; jjj = 0;
    for xxx = -20:1:20
        iii = iii +1;
        jjj = 0;
        for yyy = -20:1:20
            jjj = jjj +1;
            Tx_Pos = [sin(Theta.*pi./180) cos(Theta.*pi./180)].*3;
            Distance = norm(Tx_Pos-[xxx yyy]);
            Current_Image(iii,jjj) = Current_Range(round(Distance/(3e8/200e6/2))+1);
        end
    end
    pcolor(abs(Current_Image));
     pause

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Walter Roberson 2016-9-25

I am not sure, but I think it was that I removed an "if true" around your code. The best way to enter code is to type (or paste it in) and then highlight it all and then click on the {} Code button.

Mansour Aljohani 2016-9-26