AWR1642: In open areas, the Obj2D message error

user6419874

Intellectual 385 points

Part Number: AWR1642

Hi,

I do a test and show message by PC tool.

I find a error about Obj2D position and I think the sinAzim may be inverse.

Is something wrong or the setting not correct?

Please reference to below picture.

over 3 years ago

0 Aniket Mahajan over 3 years ago

TI__Genius 15046 points

Hi,

What is the software used on the device? Seems like the results are mirrored? Is this one of our TIREX Labs?

Regards,

Aayush

0 user6419874 over 3 years ago in reply to Aniket Mahajan

Intellectual 385 points

Hi,

I use the sample from

\mmwave_automotive_toolbox_3_0_0\labs\lab0002_short_range_radar

Thanks

0 Cesar over 3 years ago in reply to user6419874

TI__Guru*** 149894 points

Hi,

We have not seen this type of issue with the TI matlab GUI.

Have you tried it? If TI GUI works fine, you would have to double check the implementation of your custom GUI

Thank you

Cesar

0 user6419874 over 3 years ago in reply to Cesar

Intellectual 385 points

Hi,

This GUI is design it by myself, and I think it's not problem.

I use canfd to transfer data and show it by PC.

The hardware (antenna) design is by a hardware engineer, we don't use EV-BOARD.

Before this, I have already post similar situation and I think you can referent it.

e2e.ti.com/.../3529397

0 Cesar over 3 years ago in reply to user6419874

TI__Guru*** 149894 points

Hi,

If the results are mirrored,

It is possible that there is an incorrect sign in the angle computation.

Thank you

Cesar

0 user6419874 over 3 years ago in reply to Cesar

Intellectual 385 points

Hi,

May I solve the problem by modify codes?

Is any suggest?

Thanks

0 Cesar over 3 years ago in reply to user6419874

TI__Guru*** 149894 points

Hi,

Sorry for the delay

First

You can turn the EVM 180deg. If the detections are mirror image, than when the EVM is turned 180deg the detections should be correct in the GUI.

If this is the case, than you can modify either

the GUI: change the sign of "x" coordinate
or the target code: change the order of Rx antennae

thank you

Cesar

0 user6419874 over 3 years ago in reply to Cesar

Intellectual 385 points

Hi Cesar,

This it the one situation.

I don't sent you all message.

Let me descript it.

When I from (0,0) to right, the object path sometimes over right sometimes over left.

When I from (0,0) to left, the object path sometimes over left sometimes over right.

The position wrong is happen, when target angle over 75 degrees.

Thanks

+1 Cesar over 3 years ago in reply to user6419874

TI__Guru*** 149894 points

Hi,

If this happens at target angle over 75 degrees, this is expected.

This is due to the angle estimation that wraps around.

There is no solution to extend the field of view

Thank you

Cesar

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AWR1642: In open areas, the Obj2D message error