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IWR6843: About the maximum number of detected points

user5903056
Intellectual 910 points
Part Number: IWR6843
Other Parts Discussed in Thread: MMWAVE-SDK

I found the information of the limitation of maximum number of detected points, which is shown as follows:

#define DPC_OBJDET_MAX_NUM_OBJECTS                       500U

(In SDK 3.1.0.2, there is no limitation in 3TX TDM MIMO scenario and the maximum number of detected objects is 500)

I used TI Demo Visualizer to show the 3D point cloud. I want to know whether the points which are filtered out by CFAR algorithm(CFAR Range threshold and Doppler Range threshold) belong to these 500 points (Dose they also take up memory?) or only the points shown in Scatter Plot will be count into these 500 points?

  • 0
    TI__Mastermind 30405 points
    Hi Jie Yan,

    The maximum number of detected objects per frame applies to the total number of detected points i.e. after CFAR detection and prior to Angle of Arrival processing. Points which are filtered by the CFAR algorithm do not count towards this limit. I would suggest you to look at the MMW demo doxygen documentation which explains the mmw demo processing chain in great detail. It is available in the MMWAVE-SDK at the following path C:\ti\mmwave_sdk_03_00_00_08\packages\ti\demo\xwr68xx\mmw\docs\doxygen\html\index.html

    Regards
    -Nitin