AWR1642: Question on 2D FFT result of radar raw data

Hi,
Could you provide more detail for this experiment?
1. AWR1642 ES1/2.0?
2. Have you used mmWave-Studio to configure the AWR1642 in development mode (SOP-2) or running mmw demo kind of application you have captured the data over LVDS using DCA1000?
3. What is mmWave-Studio version?
4. What is type of data input to this matlab processing script?

Regards,
Jitendra

Hi, Jitendra

Thank you for your prompt response.

As to your questions,

1. AWR1642 ES1.0

2. We used mmWave-Studio to configure the AWR1642 (SOP2 mode).

3. The version of mmWave-Studio is 1.0.0.0

4. We used a binary file named 'adc_data.bin' (obtained by DCA1000) as input to matlab.

Below is the code we used to convert the raw data into correct format.

clc
close all
clear variables
%% global variables
% change based on sensor config
%----------------------------------------------------------------------
numADCBits = 16; % number of ADC bits per sample
numADCSamples = 512; % number of ADC samples per chirp
numRx = 4; % number of receivers
chirpSize = numADCSamples*numRx;
numLanes = 2; % do not change. number of lanes is always 2
isReal = 0; % set to 1 if real only data, 0 if complex data0
%-----------------------------------------------------------------------
%% read file
% read .bin file
fileName = 'adc_data.bin';
fid = fopen(fileName,'r');
adcData = fread(fid, 'int16');
fclose(fid);
fileSize = size(adcData, 1);
% one chirp only
%adcData = adcData(1:chirpSize,1);
%% organize data by LVDS lane
% for real data, each Rx in column
if isReal
LVDS = zeros(1, length(adcData(:,1)));
LVDS = reshape(adcData(:,1), [], numRx);
else
% for complex data
% LVDS row with half length
LVDS = zeros(1, length(adcData(:,1))/2);
% combine real and imaginary parts
counter = 1;
for i=1:4:fileSize-1
LVDS(1,counter) = adcData(i) + sqrt(-1)*adcData(i+2);
LVDS(1,counter+1)=adcData(i+1)+sqrt(-1)*adcData(i+3);
counter = counter + 2;
end
% create column for each Rx channel
if numRx > 2
LVDS = reshape(LVDS(1,:), length(LVDS(1,:))/numRx, numRx);
end
end