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AWR1843AOP: Clarification on Coordinate When Changing AWR1843AOP Module Orientation

mitesh rajpurohit
Intellectual 330 points
Part Number: AWR1843AOP

Tool/software:

Hello TI team,

I am currently working with the AWR1843AOP IC and have successfully flashed the MRR (Medium Range Radar) application from the Radar Toolbox (radar_toolbox_2_20_00_05). I have a question regarding the coordinate frame interpretation based on the physical orientation of the radar module.

As per the documentation (obstacle_detection_aop_users_guide.html), Scenario 1 :physical orientation of the AWR1843AOPEVM should be as per below and the chip the antenna placement as per below
in this case packet data x cordinates means ( distance along lateral axis) ,Y cordintates (Distance along longitudinal) and Z (Distance along height axis) 

       

 Scenario 2:  if i mount the AWR1843AOPEVM as below  and antenna placed as per below pic


Questions :

  • Is my understanding of the X, Y, and Z coordinates correct in the described scenarios 1?

  • In Scenario 2, what is the interpretation of the X, Y, and Z coordinates provided in the radar packet data with respect to the radar AWR1843AOPEVM?

    • Do these coordinates retain the same meaning as in Scenario 1, or do they change based on the physical orientation of the radar module?

  • 0
    TI__Guru*** 148974 points

    Hi,

    Your understanding in scenario 1 is correct. It is simple to check and confirm with a corner reflector.

    If the board is rotated in scenario 2, the coordinates will rotate as well.

    Please note that the MRR demo was not released on the AOP EVM. There are some instructions that help to run it on the EVM, however the lateral coordinates are inverted for this demo. You can confirm that with a corner reflector

    thank you

    Cesar

  • 0 in reply to Cesar
    Intellectual 330 points

    Hello Cesar,

    Thanks for response.


    "Does the MRR application (enabled with only MRR mode) with AWR1843AOP provide a ±70° Field of View (FOV) in the azimuth or elevation direction?"

    Best Regards,

    Mitesh

  • 0 in reply to mitesh rajpurohit
    TI__Guru*** 148974 points

    Hi,

    For MRR mode the FOV should be narrower. Maybe +/- 15deg

    thank you
    Cesar