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AWR1443BOOST: CFAR Doppler Direction is not supported

Anurag Tamboli
Prodigy 40 points
Part Number: AWR1443BOOST
Other Parts Discussed in Thread: AWR1443, AWR1843

Good Morning Sir/Madam,

I am using AWR1443 for development purpose with SDK2.1 version. It was mentioned in mmWave user guide that CFAR in doppler direction is not support which is kind of weird. 

Is there nay logical reasoning behind this? 

Thanks for your time in advance.

Regards

Anurag Tamboli

  • +1
    TI__Genius 15046 points

    Hi Anurag,

    There is no fundamental reason as to why doppler CFAR was not included with AWR1443 demo. This was likely a design choice back when SDK2.1 was being developed. Including both range and doppler CFAR's and combining their outputs is more complex to orchestrate properly with HWA+EDMA utilization. More importantly, combining the CFAR outputs cannot be done with the HWA, and processor intervention is needed there. To avoid the combination step taking up time on the ARM core, the CFAR doppler was not implemented.

    In SDK 3.x AWR1843 demo, CFAR in both directions is supported. CFAR happens on the HWA, and their outputs is combined by the DSP.

    Regards,

    Aayush

  • 0 in reply to Aniket Mahajan
    Prodigy 40 points

    Hi Aayush,

    Thanks for detailed explanation. 

    Regards

    Anurag Tamboli