Radar Observer · Performance — Resolution
The ability of a radar to display two targets at the same range but slightly different bearings as separate echoes depends chiefly on the:
- APulse length
- BHorizontal beam width✓ Correct
- CAntenna height
- DRange scale in use only
Explanation
Bearing (angular) resolution is governed mainly by the horizontal beam width — a narrower beam separates targets close together in bearing. Range resolution, by contrast, is governed by pulse length.
Authority: Radar Theory (USCG topic)
Practice the full Radar Observer bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Radar Observer questions
- Performance — Resolution
The ability of a radar to distinguish two targets on the same bearing but at slightly different ranges depends mainly on the:
- Performance — Resolution
Range resolution — the ability to display two targets on the same bearing as separate echoes — is determined chiefly by:
- Performance — Resolution
Two targets at the same range but slightly different bearings merge into one echo when the radar's ____ is too wide.
- Display — Motion
On a relative-motion radar display, your own ship is:
- Collision Avoidance — CPA
The closest point of approach (CPA) of a radar target is:
- Collision Avoidance — TCPA
TCPA on a radar/ARPA readout represents the: