Create a loop for matrixes

Hey , thanks in advance for reading this.

I have two matrixes, with two diferent signals in frequency domain(surv_matrix and ref_matrix). Both matrixes, have the frequencies values along the columns, and the lines are positions of a radar , so its coordinates. this matrixes have 50 000 by 400 values.( 400 are the different positions of a radar and 50 000 are the frequencies values for that position of the radar).

I want to correlate both matrixes with afmag function. But this function only allows vectors, so I was thinking of producing a for loop that for each column of those matrixes, cross-correlate the two signals for the same column. I needed help on doing this.

I have to get a code that cross-correlate surveillance_signalcut( a column vector from surv_matrix) and reference_signalcut ( a column vector from ref_matrix)

The code I will do then its this:

%Cross-ambiguity
[afmag3,delay3,doppler3] = ambgfun(Reference_SignalCut,Surveillance_SignalCut,fs,[1e6 1e6]);
afmag3 = afmag3*1; % Select plot gain *1
afmag3(afmag3>1 )= 1;

thank you

[Miguel Albuquerque]

I produced this code:

for i=1:m
    for ii=1:m2
        Reference_SignalCut=ref_matrix(:,m2);
        Surveillance_SignalCut=surv_matrix(:,m);
        [afmag3,delay3,doppler3] = ambgfun(Reference_SignalCut,Surveillance_SignalCut,fs,[1e6 1e6]);
        afmag3 = afmag3*1; % Select plot gain *1
        afmag3(afmag3>1 )= 1;
    end
end

But I get this error:

Error using zeros
Requested 131072x95759 (93.5GB) array exceeds maximum array size preference (13.9GB). This might cause MATLAB to become unresponsive.

Error in ambgfun (line 131)
amf = zeros(nfreq,taulen);

[Jan]

The message is clear: You need a lot of RAM to process problems with this size.

If you really have 50'000x400 matrices, it is very strange where "131072x95759" comes from.

[Dhanesh Alagarsamy Chinnaraja]

According to me, the indexing part of the signals inside the loops should have i and ii respectively instead of m and m2.

Can you provide some more info on what is m and m2?

[Miguel Albuquerque]

Alright, m is the number of columns of surv_matrix and m2 is the number of columns of ref_matrix, Thanks :D