IWR6843AOP: Heatmap qusetion

CHEN Jintao

Prodigy 90 points

Part Number: IWR6843AOP

Hi,

I have a question about the heatmap.

This is a heatmap that measures the proximity of people.

Why does this area have some intensity? I don't quite understand, I measured it in an open space.

Best,

Jintao.

8 months ago

0 Abhishek Karkisaval 8 months ago

TI__Expert 8890 points

Thank you for your query. Please allow us a couple of days to respond

Regards

0 Nathan Block 8 months ago in reply to Abhishek Karkisaval

TI__Mastermind 32820 points

Hi Jintao,

Is it possible there are vibrations or objects at large angles at this region that you can't see? Perhaps AC units or something? This heatmap isn't very concerning to me if points aren't being detected. This is the reason we use CFAR - to see peaks in the data.

Best,

Nate

0 CHEN Jintao 8 months ago in reply to Nathan Block

Prodigy 90 points

Hi,

What is CFAR? Where can I find relevant instructions for CFAR?

Best,

Jintao.

+1 Nathan Block 8 months ago in reply to CHEN Jintao

TI__Mastermind 32820 points

Hi Chen,

CFAR is what generates the point cloud. See our documentation here for the TI implementation.

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

For a more general overview, consider these online resources:

https://en.wikipedia.org/wiki/Constant_false_alarm_rate

https://www.radartutorial.eu/01.basics/False%20Alarm%20Rate.en.html

Best,

Nate

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IWR6843AOP: Heatmap qusetion