Pulse Repetition Frequency (PRF) is defined as:

Pulse Repetition Frequency (PRF) is defined as:

• A. The number of pulses per unit time; measured in Hertz
• B. The width of each pulse; measured in nanoseconds
• C. The energy per pulse; measured in joules
• D. The angular sweep rate; measured in degrees per second

Answer: (A)

The value being tested is how often the radar fires pulses. Pulse Repetition Frequency is the rate at which the transmitter emits pulses, i.e., the number of pulses per second, and it is measured in Hertz. This is different from how long each pulse lasts (pulse width, in nanoseconds), the energy carried by each pulse (energy per pulse, in joules), or how fast the antenna beam scans across the sky (angular sweep rate, in degrees per second). Knowing PRF helps determine how frequently returns are expected and influences range measurements and ambiguity considerations in radar operation.

The value being tested is how often the radar fires pulses. Pulse Repetition Frequency is the rate at which the transmitter emits pulses, i.e., the number of pulses per second, and it is measured in Hertz. This is different from how long each pulse lasts (pulse width, in nanoseconds), the energy carried by each pulse (energy per pulse, in joules), or how fast the antenna beam scans across the sky (angular sweep rate, in degrees per second). Knowing PRF helps determine how frequently returns are expected and influences range measurements and ambiguity considerations in radar operation.