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Original question:

RTOS/IWR1642: doppler graph

AWR1642BOOST: Velocity wrap around in doppler range graph

Shraavan nnv
Intellectual 280 points
Part Number: AWR1642BOOST


Hey

We are using AWR 1642 with short range configuration.

In the USRR range ,we observed that objects are being plotted in the doppler range graph at -10 m/s even though when the radar is placed in a environment with less moving objects .

is there a way to aviod it?

TIA

  • 0
    TI__Guru 70050 points
    This can occur due to max velocity enhancement in USRR case where it can output point with this value for some corner case. You can either ignore this event or try to disable Max-Velocity feature in USRR case.


    Regards,
    Jitendra
  • 0 in reply to Jitendra Gupta
    Intellectual 280 points

    Could you tell us the file where max velocity enhancement can be disabled ?.

  • 0 in reply to Shraavan nnv
    TI__Mastermind 22155 points

    Hello Shraavan,

    In srr_config_consts.h you can set the "MAX_VEL_ENH_PROCESSING"  to "0" to  disable the max velocity enh .

    You could also ignore the negetive doppler values in point cloud processing  by doing below modification in "MmwDemo_XYestimation()" in dss_data_path.c

    Before:

        if(obj->processingPath == POINT_CLOUD_PROCESSING)

       {

           numSearchBins = numAngleBins*2;

       }

    After:

    if(obj->processingPath == POINT_CLOUD_PROCESSING)

       {

           numSearchBins = numAngleBins;

       }

    This change will ignore the wrapped values.

    Thanks,

    Raghu