Nyquist Velocity

Q: What is the maximum Doppler-shifted frequency that can be unambiguously measured?

If you sample wave at the frequency of the wave (fs=f), can't reconstruct it -->>

Need to sample the wave with frequency (fs)of at least 2f. -->>

with a pulsed radar, then fs = PRF. -->>

so PRF is greater than or equal to 2f.

or fmax = PRF/2