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Pulse Repetition Frequency - Wikipedia, the free encyclopedia (123 words) |
 | Pulse Repetition Frequency (PRF) is the number of pulses transmitted per second by a radar. |
| The reciprocal of this is called the Pulse Repetition Time (PRT), which is the elapsed time from the beginning of one pulse to the beginning of the next pulse. |
| PRF is important since it determines the maximum target range (Rmax) and maximum Doppler velocity (Vmax) that can be accurately determined by the WSR-88D. |
| Patent 4020939: Matrix print head repetition rate control (4807 words) |
| A circuit for generating a variable frequency clock in accordance with claim 1 wherein said receiving means comprises a digital filter for receiving digital alphanumeric character data and for generating an output at a frequency corresponding to the frequency at which said character data is received. |
| Pulse width modulators 218, 222 and 226 may comprise, for example, model 555 timer circuits manufactured by Signetics and operable in a monostable mode to be triggered with a continuous pulse train. |
| The character pulse shaping circuit 300 is comprised of a pair of D type flip-flops 400 and 402, with flip-flop 400 receiving input character pulses at its data input and having an output of CHARB coupled to the input of flip-flop 402. |
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