🔍 Key Concepts

• Radar pulse width and how it affects the ability to see targets that are very close to the ship • Difference between minimum range (close-in targets) and maximum range (far targets) on radar • The role of pulse repetition frequency/rate (PRF/PRR) in radar performance

💭 Think About

• Ask yourself: what physically limits how close a target can be and still be detected before the radar’s own transmitted pulse is finished? • Which factor determines the time (and therefore distance) the radar is "deaf" while it is transmitting instead of listening for echoes? • Which of the listed options is more closely related to long‑range detection rather than close‑range (minimum) detection?

✅ Before You Answer

• Verify which parameter directly controls the duration of each transmitted pulse in microseconds. • Confirm how the time the set spends transmitting vs. receiving affects close‑in detection. • Eliminate any options that primarily affect maximum range or target discrimination, not the absolute closest range you can see a contact.