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AWR1843BOOST: how could I change the RCS in the MRR lab?

Jairo Gallardo
Expert 1640 points
Part Number: AWR1843BOOST
In the dss_data_path.c you say that the variable PeakVal is a function of the RCS, but I don't understand how it works. If I need to detect objects with a low RCS I think that I need to low the PeakValThresholds in dss_main.c but I'm not sure, so can you explain to me how to configure the RCS?
thanks
  • 0
    TI__Genius 15046 points

    Hi Jairo,

    For a lower RCS object, the detection would have a lower SNR. It would make sense to reduce the CFAR threshold.

    Regards,

    Aayush

  • 0 in reply to Aniket Mahajan
    Expert 1640 points

    Hi,

    I reduced the PeakVal threshold in order to detect static objects, I am using the MRR lab in an indoor environment and want to detect a person in static around 6 meters. With the obstacle detection lab works but I would like to calibrate the radar with a particular RCS for the MRR, for example, an RCS of 0.5. Would that be possible?

    I have changed the value from 350 to 35000, is this the correct way to modify the thresholds?, 

    obj->peakValThresholds[0].rangelim = (uint16_t) (10.0f * (float) (1U << obj->xyzOutputQFormat));
obj->peakValThresholds[0].threshold = (35000 >> obj->log2numVirtAnt);

  • 0 in reply to Jairo Gallardo
    TI__Genius 15046 points

    Hi Jairo,

    I think you would need to help me understand what you mean by calibration here. Do you mean you want to make sure a RCS 0.5 object gets detected at a particular distance?

    Regards,

    Aayush