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AWRL1432：Related questions about maxOfDetectionMatrix_HWA

Logen SHI
Prodigy 70 points
Part Number: AWRL1432

Tool/software:

Hi there,
When I read the gesture_recognition example, I found that it uses the maxOfDetectionMatrix_HWA function, but the relevant information about this HWA is only in the gesture_recognition doc, and not in other examples.

I have confirmed the operation of this mechanism by substituting fake points and using all RDMAP values ​​as input data in HWA (the original input of gesture_recognition does not include static points).

The verification method is described as follows:
(1) Substitute fixed energy values ​​and set them in different range bins on the RDmap => prioritize the ones closest to each other
(2) Substitute fixed energy values ​​and set them in different doppler bins on the RDmap => prioritize the ones with the highest speeds

I found that the gesture_recognition file did not mention how to set the relevant parameters of maxOfDetectionMatrix_HWA. It only mentioned that this function uses the energy value to filter points.

Is there any parameter that can be set for this HWA? (For example, the setting of threshold value...etc.) Or are there other relevant documentation that can be provided to me?

The sdk I use is MMWAVE_L_SDK_05_03_00_02.

Best wishes,

Chen.

  • 0
    TI__Prodigy 65 points

    Hi Chen,

    Thanks for your question. Because we're just getting the top 25 points and using those, the number of points can be tuned but setting threshold values for these points is not possible. Assuming you're looking at the GestureRecognitionDemo_documentation.pdf in the SDK, section 5 CLI Commands describes how the parameter maxNumPoints can be changed in the sigProcChainCfg2 CLI command. maxOfDetectionMatrix_HWACommonConfig() in the gesture recognition demo also allows for setting of specific doppler bins to be zeroed out, but no other configurability like you mentioned above is possible.

    If you want to adjust the thresholding, you could write your own algorithm for thresholding based on the results from the HWA, but currently the device cannot be configured in this way.

    Thank you,

    Matt