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Previous Page: Maximum Unambiguous Range (R_{max}) and PRF
Maximum Unambiguous Velocity (V_{max}) and PRFNot only is R_{max} dependent on the PRF, but so is the maximum unambiguous velocity (V_{max}) that the WSR-88D can determine for a volume of targets. By "unambiguous", we are referring to the WSR-88D's ability to accurately determine the largest Doppler radial velocity with its "first guess" or first pass through the data. The relationship between V_{max} and PRF can be expressed mathematically as:
PRT = pulse repetition time (s) = 1/PRF and = wavelength of energy transmitted. For a PRF = 1000 pulses/sec (or PRT = .001 s) and = 0.105 m (or 10.5 cm), V_{max} is 26.25 ms^{-1} (or ~ 51 kt). Next Page: Doppler Dilemma |