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AWR6843ISK: Occupancy plus vital signs chirp configs

Duy Duc Nguyen
Prodigy 55 points
Part Number: AWR6843ISK

Hello TI expert,

Im currently working on occupancy and vital signs lab in automotive toolbox but i cannot understand the config below. Why do we need 2 seperate chirpCfg in this case and what is the different between them? Many thanks in advance.

  • 0
    TI__Guru 69960 points

    Hi,

    I would recommend to go over mmWave SDK user guide to get the detail of these CLI command parameter details.

    chirpCfg 0 0 0 0 0 0 0 1   [ last parameter is to select TX antenna, here we use two set of chirp configuration 1st: uses TX0 (1) , 2nd uses TX2 (4) to send signal for that chirp]
    chirpCfg 1 1 0 0 0 0 0 4
    frameCfg 0 1 168 0 107 1 0  [ in a frame we start with chirpStartIdx :0 and chirpEndIdx:1 and loop it by 168 times]

    Now for the performance for this demo we need to have seperate set of TXs within frame, that's the reason to use these chirp config.

    Regards,

    Jitendra

  • 0 in reply to Jitendra Gupta
    Prodigy 55 points

    Are there any specific reason behind using TX0(1) and TX2(4) or 2 set of chirp configuration can uses any 2 TX antenna, for example like TX1(2) and TX2(4)?

    Regards,

    Duy Duc

  • 0 in reply to Duy Duc Nguyen
    TI__Genius 10550 points

    Hi, 

    That would depend on the antenna configuration and virtual antenna used for the demo. The performance may differ based on the type of antenna layout. 

    Regards, 

    Sudharshan K N