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Xiangyu-Gao / mmWave-radar-signal-processing-and-microDoppler-classification

Codes and template data for paper "Experiments with mmWave Automotive Radar Test-bed"
MIT License
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What does Tc, Max_value, fft_Ang Represent? #16

Closed PalgunaGopireddy closed 11 months ago

PalgunaGopireddy commented 1 year ago

You have taken 1/Tc as the sampling frequency along the azimuth direction. Does that mean that Tc is the chirp time? Does the 'Max_value' you used is the "Range profile Y max value" represented in the mmWave SDK plot section or is it not? You have taken 'Ang_fft' as 128. Have you chosen it to be equal to fft_Rang or for another reason? Do the degree values in the RA plot (agl_grd) are the target position with respect to Tx1 or Tx2 or one of the receivers?

Did you get the RA plot just like it came in the mmWave SDK?

Xiangyu-Gao commented 1 year ago

You have taken 1/Tc as the sampling frequency along the azimuth direction. Does that mean that Tc is the chirp time?

Does the 'Max_value' you used is the "Range profile Y max value" represented in the mmWave SDK plot section or is it not? -Not sure what is the "Range profile Y max value"

You have taken 'Ang_fft' as 128. Have you chosen it to be equal to fft_Rang or for another reason? -Just a random number.

Do the degree values in the RA plot (agl_grd) are the target position with respect to Tx1 or Tx2 or one of the receivers? -There is no difference because they are all very close and your doa estimation has the far-filed assumption.

Did you get the RA plot just like it came in the mmWave SDK? -made it by ourself

PalgunaGopireddy commented 1 year ago

so you did not check the plots you developed with the mmWave SDK? Have you ever used MMWAVE-SDK?.

"Range profile Y max value" is the value mentioned in the mmWave SDK (see figure attatched). Object on left - Copy

PalgunaGopireddy commented 11 months ago

Hi.

  • Tc should be the duration between two chirps.

Means Tc is the time difference between start of two chirps (or) time Difference between end of a chirp and the start of next chirp?

Xiangyu-Gao commented 11 months ago

time difference between the start of two chirps that are transmitted by the same TX

PalgunaGopireddy commented 11 months ago

Thank you.

Could you tell how you choose Max_value? We can close this case with that.

Xiangyu-Gao commented 11 months ago

The range profile Max_value should depend on your target and max. range. etc. You can try and adjust this value for visualizing your results.

PalgunaGopireddy commented 11 months ago

Thanks