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IWR6843ISK: IWR6843 60GHz radar cascade option

rohit gupta73
Prodigy 120 points
Part Number: IWR6843ISK
Other Parts Discussed in Thread: IWR6843, AWR1243

Hi,

In our application for People counting moving side by side the IWR6843 radar sensor identifies count as only 1.

Can you suggest if IWR6843 can be used in cascade form of multiple chips (2 or 4) which can give better Range resolution and accuracy of People count and tracking.

https://training.ti.com/build-cascaded-radar-using-tis-mmwave-sensors

Regards,

Rohit.

  • 0
    TI__Mastermind 25835 points

    Hello Rohit,

          IWR6843 does not support cascading.

    Could you please post your finding (Is this ISK, ODS? or custom PCB? TI resource application or modified version, What distance you were measuring, What are chirp configurations etc) more information on this would help to comment further.

    Thanks and regards,

    CHETHAN KUMAR Y.B.

  • 0 in reply to CHETHAN KUMAR Y.B.
    Prodigy 120 points

    Hi Chethan,

    Ok so can we use AWR1243 for People counting , tracking application instead as it supports cascading and very less Angular resolution due to multiple Rx/Tx antennas.

    We are using ISK EVM board iwr6843.

    TI sample people counting SDK.

    4 People were just 3-4 meters away from radar entering into the range FoV together side by side, only 1 person was reported.

    6 mtr range is configured for Radar.

    Regards,

    Rohit.

  • 0 in reply to rohit gupta73
    TI__Mastermind 28055 points

    Hi Rohit,

    You could use the cascade device to generate point cloud data, then feed this data to GTrack, which is the tracker included with the TI mmWave SDK. You would have to do most of this integration work yourself, but you would have much better angular resolution, and be able to achieve much longer ranges.

    When people are close together, it is difficult to tell them apart, as they become just one large cluster of points. You may also consider modifying the allocation algorithm, as it is fairly basic right now and there may be room for improvement. Allocation controls the creation of new tracks, and is the primary clustering algorithm in use in GTrack.  Find it in the <gtrack folder>\src\gtrack_module.c

    Regards,

    Justin