IWR6843AOP: CASO-CFAR low range resolution (FCC compliant) mode in overhead mode (build configuration)

Riccardo Repetto

Part Number: IWR6843AOP

Hi,

The radar_toolbox_1_10_00_13\source\ti\examples\People_Tracking\Overhead_3D_People_Tracking\ laboratory support a build configuration intended to be used for chirp configuration with less than 500 MHz of bandwidth and maximum transmitter power. This build configuration affects the CFAR-CASO implementation through the #define CFAR_LOW_BW (RADARDEMO_detectionCFAR_raCAAll() in \dpu\capon3d\modules\detection\CFAR\src\RADARDEMO_detectionCFAR_priv.c)

It is not clear to us if this build configuration shall be applied also to the wall-mount processing chain of the laboratory \radar_toolbox_1_10_00_13\source\ti\examples\People_Tracking\3D_People_Tracking in case we using a low bandwidth configuration (less than 500 MHz BW and maximum power) with a wall-mount setup. In particular, the build configuration for the low bandwidth CFAR is needed for the wall-mount processing chain?

Another question: the HWA support this CFAR LOW BW algorithm implementation?

Best Regards,

Riccardo Repetto

over 2 years ago

0 Luke Rouleau over 2 years ago

TI__Expert 4448 points

Hello Riccardo,

Please allow me some time to get the right eyes on your question. You can expect a response within 24-48 hours (excluding weekend). Thanks for your patience.

Regards,
Luke

0 Nathan Block over 2 years ago in reply to Luke Rouleau

TI__Mastermind 37805 points

Hi Riccardo,

Your assessment here it correct, there are some small changes to the CFAR processing that happen in the low bandwidth configuration. The low bandwidth configuration is only applied if the symbol enabling it is defined. You do not necessarily need to use this even when your configuration uses less bandwidth. The HWA does not support the Low BW implementation.

Best,

Nate

0 Riccardo Repetto over 2 years ago in reply to Nathan Block

Prodigy 70 points

Hi Nathan,

Thanks for the response.

What are the difference between the classic CFAR-CASO and these optimized implementation for low bandwidth?

Best Regards,

Riccardo Repetto

0 Riccardo Repetto over 2 years ago in reply to Riccardo Repetto

Prodigy 70 points

Another question, when using the wall-mount setup with a low bandwidth chirp configuration you suggest classic CFAR-CASO or the optimized implementation for low bandwidth?

Best Regards,

Riccardo Repetto

+1 Nathan Block over 2 years ago in reply to Riccardo Repetto

TI__Mastermind 37805 points

Hi Riccardo,

It shouldn't matter drastically. The difference between the two versions appears to be the way points in the first range bin (plus the guard cells) are detected. I ran the two RADARDEMO_detectionCFAR_raCAAll functions through a diff and found only a few differences in the first detection.

0 Riccardo Repetto over 2 years ago in reply to Nathan Block

Prodigy 70 points

Hi Nathan,

Thanks for the answer, Now it's clear.

Best Regards,

Riccardo Repetto

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IWR6843AOP: CASO-CFAR low range resolution (FCC compliant) mode in overhead mode (build configuration)