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MMWCAS-DSP-EVM: The frame rate of the output point cloud .

Lei Zhang
Prodigy 40 points
Part Number: MMWCAS-DSP-EVM

Tool/software:

I used cascade_radar_object_detect to capture the point cloud data from the 4-cascade 2243 radar and used TFDTP to receive the data. When I set the cascade radar's FRAME_PERIODICITY to 50ms, there was a frame loss issue, and the real-time point cloud only had 14 frames per second. I'm not sure whether the DSP's processing speed is insufficient or if the Ethernet transmission speed is limited.

  • 0
    TI__Genius 10540 points

    Hi Lei,

    Currently we do not have support for Processor SDK. So, I suggest you to check previous queries raised on E2E forums.

    Regards,

    Samhitha

  • 0 in reply to Samhitha Bobba
    Prodigy 40 points

    Thank you for your response, Bobba. I reviewed the post about real-time output point cloud, but it didn’t resolve my issue. I’d like to know if there are other ways to export real-time point cloud data besides using the SDK. I want to use ROS 2 to perform a rough time synchronization between the point cloud and other sensors, but I don’t understand why setting the radar's FRAME_PERIODICITY to 50 ms still results in only 14 frames per second of data？

  • 0 in reply to Lei Zhang
    TI__Genius 10540 points

    Hi Lei,

    As mentioned in earlier, the support for 4 chip cascade is limited. 

    Lei Zhang said:
    I’d like to know if there are other ways to export real-time point cloud data besides using the SDK.

    To process the ADC data on silicon and export the point cloud, you should use the SDK. Alternately, you can capture the ADC data using mmwave studio and process the data using MATLAB. If you are facing issue with 50ms frame periodicity, I suggest you to try with 100ms frame periodicity i.e with 10fps.

    Regards,

    Samhitha

  • 0 in reply to Samhitha Bobba
    Prodigy 40 points

    Hi Samhitha,

      What you mentioned about 10fps being normal is correct, as I can receive point cloud data without frame drops. However, I want to evaluate whether the MMWCAS-DSP-EVM DSP core is capable of handling higher fps. I'm unable to confirm whether the issue is due to network throughput or insufficient DSP processing speed.Do you have any good suggestions?

    Regards,

    Lei

  • +1 in reply to Lei Zhang
    TI__Genius 10540 points

    Hi Lei,

    I don't think there is any issue with the DSP core processing the ADC data. MMWCAS-DSP-EVM has 1Gbps ethernet support. I suspect that there might be packet drop when you use Windows machine. Can you try to use Linux OS to capture the ethernet packets?

    Regards,

    Samhitha