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Original question:

IWR1642: IWR1642 pplcount gui for 50m config ... walk from 50m to 0m , when people walk close 25m can be detect ,how to improve...

IWR1642: IWR1642 pplcount gui for 50m config ... detect samll object ,like drone or remote control car ...

Melvin Tsai
Intellectual 600 points
Part Number: IWR1642

Hi, 

below is my test enviornmet ,

detect object :  and remote control car.

1) IWR1642 HW: ES 2.0

2) IWR1642 FW: mmwave_industrial_toolbox_2_5_1/traffic_monitoring_16xx/...traffic_monitoring_16xx_lab.bin

3) config file: mmwave_industrial_toolbox_2_5_1/chirps/images/People+Tracking+and +Counting+Application/50m_longRangeTM

4 )My EVM was mounted at 2.25 meters,

5) tilted about 10 degrees down.

maybe detect object is too samll,the cloud point is not enough,  so how can i modify config

/Melvin

  • 0
    TI__Mastermind 28055 points

    Hi Melvin,

    For small objects, you will want a high range resolution.  This can be achieved by increasing the bandwidth.  However, your max range will decrease as you increase bandwidth.   You should also lower the CFAR thresholds - cfarCfg 4 4 15 16 8 6 0 63 63 0 1 - lowering the bolded values will increase the number of points detected.

    This demo also implements static clutter removal - if the target object is not moving, it will not be detected.

    For short range applications, you may have more success with the people counting demo.

    Regards,

    Justin

  • 0 in reply to Justin Curewitz
    Intellectual 600 points
    Hi,
    I had lower the CFAR thresholds - cfarCfg 4 4 15 16 8 6 0 40 40 0 1 , but also can't detect small object.
    If I want to increase the bandwidth , the method is ?
    Thanks
    /Melvin
  • 0 in reply to Melvin Tsai
    TI__Mastermind 28055 points

    Hi Melvin,

    Bandwidth is the chirp slope times the sample time.  Since range resolution is proportional to bandwidth, this will increase the number of points you can see. I would recommend trying some of the shorter range chirps available with the People Counting demo. 

    If you want to modify the existing chirp that you are using, see this document for details.

    What range do you want to detect objects at?

    Regards,

    Justin

  • 0 in reply to Justin Curewitz
    Intellectual 600 points

    Hi,

    Understood , I will try modify chirp. 

    I want to detect object range : length:50m, weidth:6m,

    Thanks

    /Melvin