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IWR6843AOP: How to do the calibration of TI IWR6843AOP

David Bai
Prodigy 10 points
Part Number: IWR6843AOP
Other Parts Discussed in Thread: IWR6843, , IWR6843ISK

Tool/software:

Dear TI team,
We have done ISK external antenna radar modules with TI's IWR6843 and done module calibration before.
The calibration test method of our ISK module is as follows:
1. Download the TI official demo firmware
2. Load the corresponding calibration configuration file through the mmWaveDemo Visualizer GUI
3. Read the maximum Relative Power and focus heat map of the corner reflector
4. Obtain the calibration parameters.
The following is an example of the calibration of the ISK module according to the calibration profile on the TI website, and the calibration of the Range Profile for zero Doppler power curve and Azimuth-Range Heatmap is shown in the figures.

Now our problem is:
With the introduction of a IWR6843AOP-based module, when calibrated using the same method with ISK module, we have found that the Performance of the Range Profile for zero Doppler power curve and the Azimuth-Range Heatmap is very different from that IWR6843ISK module. We suspect it has something to do with our test methods, or the calibration profile used. Please help confirm the calibration test method and procedure of the IWR6843AOP module. Here are the results we got with the AOP module calibration.


Thank you!
  • 0
    TI__Genius 11750 points

    Hi

    As the antenna is fixed with IWR6843AOP, you can run an out of box demo with IWR6843AOP with the default configuration provided in radar toolbox and use the corner reflector or a strong reflector to observe the range angle heatmap. 

    You can check with the profiles in the below location

    mmwave_sdk_03_06_02_00-LTS\packages\ti\demo\xwr68xx\mmw\profiles

    Regards

  • 0 in reply to Abhishek Karkisaval
    Prodigy 10 points

    Hi Abhishek,

    Thanks for your reply.

    May I know that what the correct range angle heatmap looks like?

    Besides, could you help to attach the right firmware(Out of box Demo) and the exact calibration profile as well? We will test accordingly in case using the wrong files.

    Looking forward to your reply. 

    Thanks.

  • 0 in reply to YX Du
    TI__Genius 11750 points

    Hi

    Please use the binary from the below location for IWR6843AOP

    radar_toolbox_3_10_00_05\source\ti\examples\Out_Of_Box_Demo\prebuilt_binaries\out_of_box_6843_aop.bin

    Please use the below confguration

    mmwave_sdk_03_06_02_00-LTS\packages\ti\demo\xwr68xx\mmw\profiles\profile_3d.cfg

    Regards