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IWR6843: Orientation Querry

Sagar Prajapati
Prodigy 20 points
Part Number: IWR6843

Tool/software:

Hello,

I have a question regarding the orientation of the IWR6843AOPEVM in the field.

From the SDK demo examples, it seems that the default setup is designed for a horizontal orientation (as shown in the image below).

However, I would like to use the device in a rotated orientation (90°) with an additional 10° tilt towards the ground (as shown in the second image).

To achieve this, what changes are required?

  • Can this be handled only by modifying the configuration file, or

  • Do I also need to make changes at the source code level?


  • 0
    TI__Mastermind 23177 points

    Hello,

    You have a few ways of doing this. You can do it at the source level, or PC/host level. When changing orientation by 90 degrees like that, all that needs to happen is the X and Z coordinates need to be switched. You can make this switch before the point cloud TLV is sent out or after it is received and before visualized/processed. That being said, why are you rotating it by 90 degrees? The 6843AOP antenna pattern provides equal azimuth/elevation resolution/FOV. As for the tilt, you can check the "sensorPosition" field and how the Industrial Visualizer found in the Radar Toolbox on the TI Developer Zone handles this via its open source python code.

    Best Regards,

    Pedrhom

  • 0
    Prodigy 20 points

    Hello Pedrhom,

    By changing Antenna Geometry parameters in configurations we are able to see correct cordinates in Visualizer without making any change in source code. Do you think the the approach we have taken is correct?

  • 0 in reply to Sagar Prajapati
    TI__Mastermind 23177 points

    That is the easiest. It would not be a change in the source code, nor to the configuration (.cfg) file, but just how the pointcloud TLV data packet is parsed with the X and Z coordinate values being switched to represent the 90 degree rotation. The tilt logic is already integrated via sensorPosition

  • 0
    Prodigy 20 points

    Somehow the Visualizer tool manages the changes by itself.