AWR1642: FFT result of the chirps

Zihan Chen

Part Number: AWR1642

From the document I can see that the board are sending multiple chirps per frame, but on the GUI we only see one range profile says "range profile at zero doppler". Is that the result just for one of those chirps in a frame? or it is a result after some calculations from all the FFT results of all chirps? Also, is it possible for us to get range result for all chirps?

Thank you very much,

Zihan

over 5 years ago

0 Cesar over 5 years ago

TI__Guru*** 149044 points

Hi,

It is not possible to get the range profile for each chirp because there is not sufficient bandwidth to transfer this data with UART.

the range profile that you see is an average for all the chirps.

Thank you

Cesar

0 Zihan Chen over 5 years ago in reply to Cesar

Prodigy 140 points

I have one more quick question, did you take the average of the complex fourier results and then return the absolute value or did you first take absolute value of all the fourier signals and then average them?\

Thank you very much,

Zihan

0 Cesar over 5 years ago in reply to Zihan Chen

TI__Guru*** 149044 points

First the absolute value because it is faster

thank you

Cesar

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AWR1642: FFT result of the chirps