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Original question:

TDA2SX: Angle Finding radar VSDK use case?

TDA2SX: azimuth results for "AWR1243 Capture + Radar Object Detect..." EVM demo use case

Zach Barnes4
Intellectual 510 points
Part Number: TDA2SX
Other Parts Discussed in Thread: AWR1243, MMWAVE-STUDIO, TIDEP-01012

For the usecase "AWR1243 Capture + Radar Object Detect..." I have the demo running on the EVM. However in the MATLAB output to "Texas Instruments - Cascade demo" display, the "Azimuth Heatmap" and all the other Azimuth taps in that display quadrant - do not show any data. In the uart interface I have tried all the combinations of 1/0 in the "GUI Control" without getting any azimuth results'.

What do I need to do to see the Azimuth results?

Thank you,

Zach

  • 0
    TI__Guru 70140 points

    Hello Zach,

    Could you try other Cascade application from SDK to make sure that hardware health is fine? Or if this is TIDEP-01012 board the try to verify the same with mmwave-studio.

    Regards,

    Jitendra

  • 0 in reply to Jitendra Gupta
    TI__Mastermind 30245 points

    Are you able to see any points in the point cloud or only the Azimuth is a problem?

    Thanks and Regards

    Piyali

  • 0 in reply to Piyali Goswami
    Intellectual 510 points

    Attached see the results I am getting from Matlab.  

    Azimuth in the lower right corner has no results except FFT input has all zeros showing...

  • 0 in reply to Zach Barnes4
    TI__Mastermind 30245 points

    Zach

    Can you please run the calibration sequence and store the calibration data in the SD card?

    Refer: C:\PROCESSOR_SDK_VISION_03_08_00_00\vision_sdk\docs\Radar\ProcessorSDKRadar_UserGuide.pdf for calibration steps.

    Thanks and Regards

    Piyali

  • 0 in reply to Piyali Goswami
    Intellectual 510 points

    For the demo, the uart for calibration is asking for the following and the pdf you reference does not specify these values of this demo:

    Calibration setting (<numFrames> <rangeStartBin> <rangeEndBin>):

    What should I use for "numFrames", "rangeStartBin", & "rangeEndBin"?

    Thank you,

    Zach

  • 0 in reply to Zach Barnes4
    Intellectual 510 points

    Hi Piyali,

    In the PDF reference link you shared, the details are not available for numFrames, rangeStartBin, & rangeEndBin. I have attempted for make "educated guess" for these values to run and load cc.M on the SD card. The results are not a expected, so I want to try again with more information from you for running calibration.  Please provide any other meaningful context for cascade EVM  AWR1243 capture + object detect use case calibration. For example, when we calibrate our other radars we need sensor rotation as well.

    Thank you,

    Zach

  • 0 in reply to Zach Barnes4
    TI__Mastermind 30245 points

    Hi Zach

    After you generate the cc.mat, you would need to run the MATLAB script 

    vision_sdk\apps\src\rtos\radar\src\usecases\cascade_radar_object_detect\create_calib_coefs.m

    Then you need to load the .bin file generated into the SD card.

    For the calibration, you would need to place a corner reflector at boresight.

    Thanks and Regards

    Piyali

  • 0 in reply to Piyali Goswami
    Intellectual 510 points

    Hi Piyali,

    Thank you. I was able run create_calib_coefs.m and get the CC.m on the SD card. 

    I will run calibration again with a CR at the boresight.

    Please, I still need to know what values to input to the terminal when running calibration:

    Calibration setting (<numFrames> <rangeStartBin> <rangeEndBin>):

    What should I use for "numFrames", "rangeStartBin", & "rangeEndBin"?

    Thank you,

    Zach

  • 0 in reply to Zach Barnes4
    TI__Mastermind 30245 points

    Zach

    You can use numFrames as 30-50 (Just long enough for multiple frames to be captured), rangeStart and end should be such that the corner reflector potential side lobes are captured. 

    I usually give 2 times the distance from the radar of the corner reflector as the end and 0 as the start bin numbers.

    Thanks and Regards

    Piyali