出典:Wikipedia
出典:『Wikipedia』 (2011/06/10 23:03 UTC 版)
Pulse repetition frequency (PRF) is the number of pulses per time unit (e.g. Seconds). It is mostly used within various technical disciplines (e.g. Radar technology) to avoid confusion with the unit of frequency hertz (Hz) mainly used for waves. Waves are thought of as more or less pure single frequency phenomena while pulses may be thought of as composed of a number of pure frequencies. The reciprocal of PRF is called the Pulse Repetition Time (PRT), Pulse Repetition Interval (PRI), or Inter-Pulse Period (IPP), which is the elapsed time from the beginning of one pulse to the beginning of the next pulse. Within radar technology PRF is important since it determines the maximum target range (Rmax) and maximum Doppler velocity (Vmax) that can be accurately determined by the radar.