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IWR6843ISK: Data accuracy

Divya Teja Settimali
Intellectual 360 points
Part Number: IWR6843ISK

Tool/software:

Hi,

Below is the attached video if you observe the sensor is mapped on the truck with a holder and we were doing some tests. The sensor is super sensitive even with slightest of the tilt. We mapped the target data alone and you see that even when the person walked straight as we go away from the sensor there is a deviation on the X axis. The person who started at 1.6 and by the end he ends up 2.3. Why is it that the dynamic points and target data are drifting as we are walking away from the sensor but while walking towards the sensor we do not have any problem. How can we solve this problem? I will be glad to hear from you a solution.

 

Regards,

Divya Teja Settimali

  • 0
    TI__Mastermind 37805 points

    Hi,

    Is the truck moving or is the engine on when the measurement is running? Can you share a video of the scenario? Perhaps the board is tilted in the x-direction?

    Best,

    Nate

  • 0 in reply to Nathan Block
    TI__Mastermind 37805 points

    Please also tell us what configuration file and binary you are running on the device.

    Best,

    Nate

  • 0 in reply to Nathan Block
    Intellectual 360 points

    Hi Nathan,

    Thanks for the reply. We are using 3D people tracking bin file and here is the configuration file:

    sensorStop
    flushCfg
    dfeDataOutputMode 1
    channelCfg 15 7 0
    adcCfg 2 1
    adcbufCfg -1 0 1 1 1
    lowPower 0 0
    profileCfg 0 60.75 30.00 25.00 59.10 0 0 20 1 96 2950.00 2 1 36
    chirpCfg 0 0 0 0 0 0 0 1
    chirpCfg 1 1 0 0 0 0 0 2
    chirpCfg 2 2 0 0 0 0 0 4
    frameCfg 0 2 96 0 55.00 1 0
    dynamicRACfarCfg -1 4 4 2 2 8 12 4 8 5.00 8.00 0.40 1 1
    staticRACfarCfg -1 6 2 2 2 8 8 6 4 8.00 15.00 0.30 0 0
    dynamicRangeAngleCfg -1 0.75 0.0010 1 0
    dynamic2DAngleCfg -1 1.5 0.0300 1 0 1 0.30 0.85 8.00
    staticRangeAngleCfg -1 0 8 8
    antGeometry0 0 -1 -2 -3 -2 -3 -4 -5 -4 -5 -6 -7
    antGeometry1 -1 -1 -1 -1 0 0 0 0 -1 -1 -1 -1
    antPhaseRot 1 1 1 1 1 1 1 1 1 1 1 1
    fovCfg -1 70.0 20.0
    compRangeBiasAndRxChanPhase 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
    staticBoundaryBox -3 3 0 10 0 3
    boundaryBox -4 4 0 20 0 3
    sensorPosition 1 0 15
    gatingParam 3 2 2 2 4
    stateParam 3 3 12 500 5 6000
    allocationParam 40 100 0.1 10 0.5 20
    maxAcceleration 0.1 0.1 0.1
    trackingCfg 1 2 800 30 46 96 55
    presenceBoundaryBox -4 4 0 20 0 3
    sensorStart

    I have also ran this configuration file on TI Industrial Visualizer and it is the same, there is a drift.

    Regards,

    Divya Teja Settimali

  • 0 in reply to Divya Teja Settimali
    TI__Mastermind 37805 points

    Hi,

    Please show a video of the setup and the visualizer running. Is it possible there is a multi-path or the sensor is tilted?

    Best,

    Nate