AWR1843BOOST: Flow up to object detection of AWR1843

Hiroyuki Kanematu

Expert 2975 points

Part Number: AWR1843BOOST
Other Parts Discussed in Thread: AWR1843,

I have two questions.
Q1.In what step is AWR1843 performing object detection?

For me, after the CFAR algorithm, I will detect objects that meet the conditions in the Range Doppler Matrix.

Is it correct to understand that what is detected as an Object is output as coordinates by AoADoppler processing?

Q2.About the measurement of AWR843

I sent the radio waves perpendicular to the floor. (using AWR1843Boost)
AWR1843 was placed 43 cm above the floor.

In the cfg file, both Doppler and Range were disabled for grouping, but Range Profile had peaks at 49 cm, 52 cm, 54 cm, and 57 cm. (52 cm is the highest peak.)

Is there an error of about 10 cm depending on the object?

By the way, I got the following result.

over 2 years ago

0 Cesar over 2 years ago

TI__Guru*** 148404 points

Hi,

Have you performed range calibration for the EVM?

Thank you

Cesar

0 Hiroyuki Kanematu over 2 years ago in reply to Cesar

Expert 2975 points

Hello thank you.

No, I don't do anything in particular.
I am loading the cfg file from Visualizer.
(I would like to know the specific calibration method.)

(p.s.)
Are the considerations in Q1 that I asked about correct?

0 Cesar over 2 years ago in reply to Hiroyuki Kanematu

TI__Guru*** 148404 points

Hi,

For Q1, please take a look at the documentation for an earlier version of the SDK

C:/ti/mmwave_sdk_02_01_00_04/packages/ti/demo/xwr16xx/mmw/docs/doxygen/html/index.html

Following are the processing steps

1. 1D FFT

2. 2D FFT

2a. Generate the Range Doppler Heatmap

2b. Peak Grouping

3. CFAR

4. Angle Estimation (AoA)

For calibration information

Please see

the commands in the profile configuration files.

C:\ti\mmwave_sdk_03_05_00_04\packages\ti\demo\xwr18xx\mmw\profiles\profile_2d.cfg

compRangeBiasAndRxChanPhase

measureRangeBiasAndRxChanPhase

For more information about these commands please see

1) mmWave SDK User Guide

C:\ti\mmwave_sdk_03_05_00_04\docs\mmwave_sdk_user_guide.pdf

Section - 3. 4. Configuration (.cfg) File Format

2) Search this forum using google site search as follows for similar questions

site e2e.ti.com compRangeBiasAndRxChanPhase

site e2e.ti.com measureRangeBiasAndRxChanPhase

Thank you

Cesar

0 Hiroyuki Kanematu over 2 years ago in reply to Cesar

Expert 2975 points

Thank you for your reply.

Q1 was indeed mentioned.
However, is it correct to assume that this is the same for AWR1843?

Also, in the materials you posted, there are two types of grouping, but can we decide on this?

I will check Q2.

Thank you for posting.

0 Cesar over 2 years ago in reply to Hiroyuki Kanematu

TI__Guru*** 148404 points

Hi,

The signal processing algorithm is similar on AWR1843.

For details on grouping you would need to check the SDK 3.x documentation:

Search "group" in:

C:/ti/mmwave_sdk_03_05_00_04/packages/ti/datapath/dpc/dpu/cfarcaproc/docs/doxygen/html/index.html

For SDK 3.5 xwr18xx demo configuration I don't see commands for different grouping algorithms.

C:\ti\mmwave_sdk_03_05_00_04\packages\ti\demo\xwr18xx\mmw\profiles\profile_3d.cfg

Thank you

Cesar

0 Hiroyuki Kanematu over 2 years ago in reply to Cesar

Expert 2975 points

Thank you for your reply.

If you don't understand, I will ask you again.
Sorry for the inconvenience.

0 Cesar over 2 years ago in reply to Hiroyuki Kanematu

TI__Guru*** 148404 points

Thank you

I will close this thread now.

If you have new questions, please start a new thread

Cesar

0 Hiroyuki Kanematu over 2 years ago in reply to Cesar

Expert 2975 points

OK, Thank you!

0 Cesar over 2 years ago in reply to Hiroyuki Kanematu

TI__Guru*** 148404 points

Thank you

cesar

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AWR1843BOOST: Flow up to object detection of AWR1843