Radar Studio: Post processing of captured data in Matlab

Santhana Raj

Part Number: AWR1243BOOST
Other Parts Discussed in Thread: AWR1243, AWR1642

Hi,

I am using AWR1243+TSW1400 and Radar Studio to capture ADC data. I am able to capture the data in my PC. The post processing of Radar Studio also works fine.

The data is test data generated with an object at (4,3) m moving at (0.1,0.1)m/s. This was generated through the Test Source tab in Radar Studio. The post processing of radar studio successfully detects the object.

The RS screenshots are as below,

The Matlab code that i am using is:

The range plot is,

As you can see, the Range plot is entirely different that the Actual from Post_proc tab.

I would like to point out that the matlab code here works correctly with ADC capture data of AWR1642. Hence I suspect the Radar Studio writes the bin file in a different format than ADC data capture.

I suspect I am reading the data somehow wrongly form the way that it is written by Radar Studio. Can anyone help me on how to read the data properly in Maltab.

Thanks in Advance,

Santhana Raj

over 7 years ago

0 Santhana Raj over 7 years ago

Expert 1765 points

I couldnt add the Matlab code in the Question directly. Please find it in the txt

Fullscreen file_read_tsw.txt Download

clc;
clear all;
close all;


M=256;% no of samples per chirp
N=128;% no of chirps
T=2;% no of transmitters
K=4;% no of receivers
Fr=32;% No of Frames 300 possible


% Default consts from  Radar Studio
sampl_rate=10000e3;% sampling rate
slope=29.982e12;%slope
x_axis_val = ((0:(M-1))/M)*(sampl_rate/slope)*3e8/2;% (sampling rate/2*slope)* c

%File read
fid=fopen('finiteframes_trial.bin');
c=fread(fid,Inf,'uint16');
fclose(fid);
bitwidth=16;
data=c(1:M*N*K*T*2*Fr);
data( data > 2^(bitwidth-1)-1) = (data( data > 2^(bitwidth-1)-1) - 2^(bitwidth));  % Unsigned to signed fixed point value conversion
d1=reshape(data,2,M,K,T,N,Fr);
sig=squeeze(d1(1,:,:,:,:,:)+1i*d1(2,:,:,:,:,:));

x=fft(sig);
figure, plot(x_axis_val,abs(mean(x(:,:,1,1,1),2)));

file:

0 Cesar over 7 years ago in reply to Santhana Raj

TI__Guru*** 148364 points

Hi,

Please search the forum for similar question

This has been already addressed

thank you
Cesar

Sensors

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Radar Studio: Post processing of captured data in Matlab