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mmwave Studio: The peak stands opposite to the actual scene

suzukimon
Intellectual 290 points
Other Parts Discussed in Thread: AWR1243

Dear TI Experts.

We analyze the data acquired by AWR1243 + DCA1000 using mmwave studio.
The analyzed scene is a scene where a person with a reflector stands on the left in front of AWR1243.

When you check the Range Angle plot in mmwave Studio, the position where the signal strength is high appears on the right in front.
However, when you look at Detection and Angle estimation Results in mmwave Studio, many points are detected on the left side ahead.

As confirmed by matlab that we wrote, the signal strength was high on the front right side as in the Range Angle plot.

Actual scene: A person is on the left side in front of the evaluation board
Range Angle plot: High signal intensity detected on the front right side
Detection and Angle estimation Results: Point detected on the front left side
Matlab we wrote: High signal strength detected on the front right side

What can be attributed to this difference?

The transmit antennas are Tx1 and Tx3, and the receive antennas are Rx1-Rx4, and angle detection is performed by MIMO.

We attached mmwave Studio result.


Best Regards,

suzuki

  • 0
    TI__Guru*** 148954 points

    Hi,

    I think it is related to the orientation of the heatmap in mmwave studio.

    We are checking with the team and will get back to you

    thank you

    Cesar

  • 0 in reply to Cesar
    TI__Mastermind 24955 points

    Suzuki,

    Can you provide a few pictures of your physical setup?

    The orientation of the board is key and you may have oriented the board in such a way that the right and left positions are inverted.

    Regards,
    Kyle

  • 0 in reply to Kyle Cousino
    Intellectual 290 points

    Hello Kyle

    Thank you your reply.

    The plot shown above is measured in the following scene.

    Can you judge it?

    If you are requesting another photo, please tell me.

    Regards, 

    Suzuki

  • 0 in reply to suzukimon
    TI__Mastermind 24955 points

    Suzuki,

    The heatmap you provided in your original post matches the graphic in your most recent post. I think you have your orientations reversed. You should consider the perspective as if you were standing behind the sensor to determine which direction is left versus which direction is right.

    The bright spot in your heatmap is seen to the right of the sensor. Based on the picture above, the person is standing to the right of the sensor when you use sensor's perspective, not the perspective of the person.

    Regards,
    Kyle