DCA1000EVM: Range-Doppler map

Duy Duc Nguyen

Part Number: DCA1000EVM

Hello TI experts,

I'm new to all this radar and I sorry in advance if the question sounds dumb to you but could someone let me know why there is a high amplitude line in middle of the range-doppler map along the range axis? Many thanks in advance.

over 3 years ago

0 Abhed Misra over 3 years ago

TI__Genius 13805 points

Hi,

Firstly there is no question as dumb question. Secondly, please feel free to ask anything related to TI Products on TI e2e.

So you are looking at a range vs doppler map which plots the range(1D FFT) and doppler(2D FFT), hence you see a static object being plotted at 0 doppler bin over captured chirps/frames data.

Regards

0 Duy Duc Nguyen over 3 years ago in reply to Abhed Misra

Prodigy 55 points

Thans for your reply.
The line go along the range axis from 0 to 12km, is that indicate there is a static object at every range bin?

+1 Abhed Misra over 3 years ago in reply to Duy Duc Nguyen

TI__Genius 13805 points

Hi,

So i dont think it is in KM, as the typical range is in meters. Secondly, it is indicating that there is clutter beyond certain distance however if you adjust the y axis then you may see a strong peak for the some closer object detected(if present).

Regards

Sensors

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DCA1000EVM: Range-Doppler map