AWR1843BOOST: Microdoppler Graphs

Hello Shailesh,

Thank you for your reply. I'm trying to figure out how to get the microDoppler graph in mmwave studio, as shown in the post-processing section. Is it not possible to access the code that only outputs the microDoppler graph? Please let me know.

Regards,

Zahid

Hello Zahid, unfortunately no, we cannot share the micro-doppler code in public. 

Regards,
Shailesh

Hello Shailesh,

Do you have any suggestions on how I can get this graph in MATLAB? I've been trying for a few weeks but haven't found anything yet. Could you please help me? Thank you so much.

Best regards,

Zahid KAYA

Can you provide more details about which specific plot you wish to understand? Perhaps with an example? I can try to help you accordingly.

Regards,
Shailesh

Thank you for asking. I am trying to get drone microdoppler signature spectogram. I added the example plot from mmwave Studio. I want to get the same plot in MATLAB but I couldn't it.  I have not yet been able to obtain the patterns in the background of the yellow line, that is, above and below it, in MATLAB. 

Regards,
Zahid

Isnt this just a Range-Doppler spectrum? You would take FFT with some window across samples first and then across chirps to obtain a Range-Doppler spectrum. Unable to comment much as I cannot see what mmwave studio plot options you selected.

Regards,
Shailesh

This is a micro-Doppler graph. It's the graph obtained by entering the range bin in the microdoppler section after post-processing in mmwave studio. What I want is to create the same graph in MATLAB as I did in mmwave studio. Then, I'll convert the raw data into graphs using automation and save them.

Regards,

Zahid KAYA

Understood now. Let me check on this and get back to you. 

Regards,
Shailesh

Hi Zahid, it is simply stacking the doppler spectrum for given range bin and plotting it across frames.

Regards,

Shailesh

Hi Shailesh,

Thank you for reply. However, I cannot get the similar graph in MATLAB. Is there any way to reach the example code directly? Or is there any example code for it? Please let me know.

Regards,
Zahid

Hi Zahid,

I am not aware of any example code for the same. The difference can come from the windowing function used along the chirps, is this something you can try?

Regards,
Shailesh

Hi Shailesh,

Yes, unfortunately, I tried all methods but I couldn't get the correct graph. For clarity, I'm sharing the data I captured by simply moving my hand in front of the radar, separately in mmwave Studio and MATLAB. If that's helpful, I can also share the code I used. Thank you for help. 

Actually, I got the micro-Doppler plots by editing the code I found in the github repo, I am adding the link here for convenience.

" https://github.com/Xiangyu-Gao/mmWave-radar-signal-processing-and-microDoppler-classification/tree/main "

Regards,
Zahid KAYA


    


The first image is from MATLAB, the second image is from mmwave Studio.

Hi Zahid,

Can you help me understand you end application for this?

Regards,

Shailesh

Hi Shailesh,

Sure! I have raw data I recorded with drone/no drone. I'll compile this data into a spectrogram and use it in machine learning for drone presence. 

Regards,
Zahid