CCS/TIDEP-0092: Could you explain dstPingPong data?

Weks Chen

Intellectual 880 points

Part Number: TIDEP-0092

Tool/software: Code Composer Studio

Hi,

I used Industrial Toolbox SRR demo code to develop SRR product.

Could you explain the the difference doppler bins range bins on 2ndFFT process?

I don't understand the doppler bins data array, how does it look like?

Can you describe how range bins become to doppler bins?

Thanks

over 7 years ago

0 Luke Lin over 7 years ago

TI__Expert 3250 points

Hi,

Please first install mmWaveSDK

http://www.ti.com/tool/MMWAVE-SDK

2nd Dimension FFT Processing is described in

\mmwave_sdk_xx_xx_xx_xx\packages\ti\demo\xwr16xx\mmw\docs\doxygen\html\index.html

0 Weks Chen over 7 years ago in reply to Luke Lin

Intellectual 880 points

Hi Luke,

I've seen the document but I'am confused.
Could you kindly help me to clairfy the dstPingPong array ?
After EDMA 2D_IN_PING, I think the dstPingPong array data is like below.
dstPingPong[0] = TX1 Chirp1 RX0 data[0];
dstPingPong[1] = TX1 Chirp2 RX0 data[0];
dstPingPong[2] = TX1 Chirp3 RX0 data[0];
dstPingPong[3] = TX1 Chirp4 RX0 data[0];

or like this

dstPingPong[0] = TX1 Chirp1 RX0 data[0];
dstPingPong[1] = TX1 Chirp1 RX0 data[1];
dstPingPong[2] = TX1 Chirp1 RX0 data[2];
dstPingPong[3] = TX1 Chirp1 RX0 data[3];

Thanks

0 Anil Mani over 7 years ago in reply to Weks Chen

TI__Expert 4720 points

Hi Weks,

The configuration is as you mentioned in option 1. This is because the next operation is the doppler FFT or 2D FFT (done across chirps). Let me know if you have any questions.

Regards

Anil

0 Weks Chen over 7 years ago in reply to Anil Mani

Intellectual 880 points

Hi Anil,

Thanks for your answer.

weks

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CCS/TIDEP-0092: Could you explain dstPingPong data?