What does PPS stand for in radar terminology?

• A. Pulses Per Second
• B. Pulse Per Second
• C. Pulses Per Scan
• D. Pulse Per Second Frequency

Answer: (A)

PPS is about how often the radar sends out pulses. It stands for Pulses Per Second, the rate at which pulses are emitted each second (the pulse repetition frequency). This is the standard way to express the transmission rate, and it’s the same concept as PRF. The more pulses per second, the faster the radar scans the scene, but the shorter the maximum unambiguous range becomes (Rmax ≈ c/(2×PRF)). The other phrasings don’t match how this rate is defined: one uses a singular “Pulse” rather than “Pulses,” a term that would imply per scan rather than per second, or adds “Frequency” which isn’t the conventional label for this rate.