When a RADAR is being operated on the 6 mile...

🔍 Key Concepts

• Pulse width (PW) versus maximum range – how a longer pulse affects energy on target and minimum range • Pulse repetition rate (PRR or pps) versus maximum unambiguous range – how faster repetition can create range ambiguity • Typical combinations of PW and PRR for medium ranges like 6 NM on marine radar

💭 Think About

• For a 6‑mile range, do you need very fine short‑range detail, or reliable detection at a moderate distance with good energy on target? How does that guide your choice of pulse width? • If you increase the pulse repetition rate too much, what happens to the maximum unambiguous range? Which answer choices might make the radar behave more like a short‑range setting? • Compare which combinations look more suited to very short range versus medium range. Which pair seems like a balanced "medium‑range" setting rather than an extreme?

✅ Before You Answer

• Calculate or recall how longer pulse width affects minimum range and detection – is an extremely short PW necessary on 6‑mile range? • Consider what sort of pps (pulses per second) you would expect on a short‑range" harbor setting versus a medium‑range setting; eliminate the ones that seem too high or too specialized • Verify that the chosen combination would not cause range ambiguity at 6 NM – very high PRR shrinks the maximum unambiguous range

When a RADAR is being operated on the 6 mile range setting what is the most appropriate pulse width and pulse repetition rate?

1.0 μs PW and 500 pps.

2.0 μs PW and 3,000 pps.

0. 25 μs PW and 1,000 pps.

0.01 μs PW and 500 pps.

🔍 Key Concepts

💭 Think About

✅ Before You Answer