Dec 04, 2019
03:14 AM
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Dec 04, 2019
03:14 AM
Hi everybody,
I have a question about the maximum distance measured. I know when the scan time (Tsweep) is 1ms, 64 samples per chirp, and BW is 200Mhz we will have Fs = 64000. However, does the maximum beat frequency follow the Nyquist theorem? And if obeyed, the maximum distance is only 24 (meter) rather than 48 (meter). Your maximum distance calculation (ParseRawDataFile) is 48 (meter). Can someone explain it to me?
Thank!
H.Minh
I have a question about the maximum distance measured. I know when the scan time (Tsweep) is 1ms, 64 samples per chirp, and BW is 200Mhz we will have Fs = 64000. However, does the maximum beat frequency follow the Nyquist theorem? And if obeyed, the maximum distance is only 24 (meter) rather than 48 (meter). Your maximum distance calculation (ParseRawDataFile) is 48 (meter). Can someone explain it to me?
Thank!
H.Minh
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- IFX
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Feb 01, 2020
12:32 AM
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Feb 01, 2020
12:32 AM
We are talking about FMCW radar, rifght? Usig FFT aftewords? 7500 GHz chirp gives you 2 cm resolution, 200 MHz sweep -> 75 cm.
After FFT, 64 points chirp provides you 32 samples by distance, 32*0,75 =24 meters.
K.
After FFT, 64 points chirp provides you 32 samples by distance, 32*0,75 =24 meters.
K.