Which of the following describes an azimuthal projection map?
The correct answer is B: A map that shows true bearings and distances from a specific location. An azimuthal projection map is a map that shows true bearings and distances from a specific location. This type of map is centered on a specific point and shows accurate bearings and distances from that center. For amateur radio operators, this is useful for direction finding and determining bearings. Understanding this helps when using maps for radio direction finding.
Exam Tip
Azimuthal projection = map showing true bearings and distances from specific location. Think 'A'zimuthal = 'A'll bearings 'A'ccurate from center. Map centered on a point showing accurate bearings and distances from that center. Not about land masses, satellites, or orbital movement.
Memory Aid
"Azimuthal projection = map showing true bearings and distances from specific location. Think 'A'zimuthal = 'A'll bearings 'A'ccurate. Map centered on a point showing accurate bearings and distances from that center. Useful for direction finding."
Real-World Application
You use an azimuthal projection map centered on your location. The map shows true bearings (directions) and distances from your location to other points. This is useful for direction finding - you can determine the bearing to a signal source. The map is designed for accurate bearing and distance measurements from the center point.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Azimuthal projection isn't specifically about accurate land masses - many map types show land masses. The key feature is bearings and distances from a center point.
Option C: Incorrect. Azimuthal projection isn't about satellite crossing angles - that's not what this map type shows. It's about bearings and distances from a location.
Option D: Incorrect. Azimuthal projection isn't about satellite orbital movement - that's not what this map type shows. It's about bearings and distances from a center point.
题目解析
The correct answer is B: A map that shows true bearings and distances from a specific location. An azimuthal projection map is a map that shows true bearings and distances from a specific location. This type of map is centered on a specific point and shows accurate bearings and distances from that center. For amateur radio operators, this is useful for direction finding and determining bearings. Understanding this helps when using maps for radio direction finding.
考试技巧
Azimuthal projection = map showing true bearings and distances from specific location. Think 'A'zimuthal = 'A'll bearings 'A'ccurate from center. Map centered on a point showing accurate bearings and distances from that center. Not about land masses, satellites, or orbital movement.
记忆口诀
Azimuthal projection = map showing true bearings and distances from specific location. Think 'A'zimuthal = 'A'll bearings 'A'ccurate. Map centered on a point showing accurate bearings and distances from that center. Useful for direction finding.
实际应用示例
You use an azimuthal projection map centered on your location. The map shows true bearings (directions) and distances from your location to other points. This is useful for direction finding - you can determine the bearing to a signal source. The map is designed for accurate bearing and distance measurements from the center point.
错误选项分析
Option A: Incorrect. Azimuthal projection isn't specifically about accurate land masses - many map types show land masses. The key feature is bearings and distances from a center point. Option C: Incorrect. Azimuthal projection isn't about satellite crossing angles - that's not what this map type shows. It's about bearings and distances from a location. Option D: Incorrect. Azimuthal projection isn't about satellite orbital movement - that's not what this map type shows. It's about bearings and distances from a center point.
知识点
Azimuthal projection, Map projections, Bearings and distances, Direction finding
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.