AWR1642BOOST: How to calculate Range Profile relative power which can be seen on mmWave Demo Visualizer

Nobu

Part Number: AWR1642BOOST

Hi

I obtained Range profile data from COM port.
Loading it, data value was about 20000~40000 and I don't know its meaning.
How can I calculate relative power scaled in dB like below picture from saved data?

BR,
Nobu

over 6 years ago

0 Raghunandan Kamath over 6 years ago

TI__Mastermind 22155 points

Hi Arakawa-san,

The post seem to be answered in the below e2e post:

BR,

Raghu

0 user6096953 over 6 years ago in reply to Raghunandan Kamath

Expert 1310 points

Hi Raghu,

since you are already referring to this post, could you please take your time to give an answer to question raised in there?

[What is] the physical value of "Relative Power" [...] ? [...] could you tell me how to calculate with the Demovisualizer or measure the received power of the radar?

0 Raghunandan Kamath over 6 years ago in reply to user6096953

TI__Mastermind 22155 points

Hi,

The MMWAVE-DEMO-VISUALIZER code is available online. If you open the visualizer in Chrome browser then go to settings->More Tools-> Developer Tools. Then check the source file mmWave.js for all the calculations.

Thanks,

Raghu

0 user6096953 over 6 years ago in reply to Raghunandan Kamath

Expert 1310 points

Hi Raghu,

yes, this is possible. But if you go back step by step like this, you end up with the values the sensor measures and again have no reference value as all the numbers are relative. But in relation to what? We are missing certain dimensions and reference levels.

0 Nobu over 6 years ago in reply to Raghunandan Kamath

Prodigy 100 points

I confirmed the post you sent and I found below equation.

I used this equation but result seemed strange...(Relative power became about 1300 dB)
Is this wrong?

BR,
Nobu

0 Anil Mani over 6 years ago in reply to Nobu

TI__Expert 4720 points

Arakawa-san,

Can you share your calculation and the parmeters used?

-Anil

0 Nobu over 6 years ago in reply to Anil Mani

Prodigy 100 points

Anil-san

I used the equation I posted.

Parameters are below

value : range-profile data we got (20000 ~ 40000)

NumVirtAnt : 8 (SDK2.1)

numrangeBins : 128

For example, if we set 30000 as "value", calcuration result is 340[dB].
(1300dB was wrong, sorry...)

BR
Arakawa

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AWR1642BOOST: How to calculate Range Profile relative power which can be seen on mmWave Demo Visualizer