Which of the following are provided by satellite tracking programs?
The correct answer is D: All these choices are correct. Satellite tracking programs provide maps showing real-time satellite position, time/azimuth/elevation of passes, and apparent frequency including Doppler shift. These programs use orbital elements (Keplerian elements) to calculate and display satellite positions, predict passes, and account for Doppler frequency shift. For amateur radio operators, tracking programs are essential tools for satellite operation, helping you know when satellites are visible, where to point your antenna, and what frequency to use (accounting for Doppler). Understanding what tracking programs provide helps you use them effectively.
Exam Tip
All three are provided by tracking programs: maps, pass predictions, Doppler shift. When all options are correct features, 'all of the above' is usually the answer. Tracking programs are comprehensive tools for satellite operation.
Memory Aid
"Tracking programs provide all: Maps, Pass predictions, Doppler shift. Think 'T'racking 'P'rograms = 'T'otal 'P'lanning tools. Comprehensive information for satellite operation."
Real-World Application
You use a satellite tracking program to plan a contact. It shows: (1) A map with the satellite's current position and ground track, (2) The next pass with start time (14:30), maximum elevation (45° at 14:35), and end time (14:40), and (3) The frequency you should use (145.950 MHz) accounting for Doppler shift. All this information helps you successfully work the satellite.
Key Concepts
Why Other Options Are Wrong
Option A: While correct, this is incomplete. Tracking programs also provide pass predictions and Doppler information.
Option B: While correct, this is incomplete. Tracking programs also provide maps and Doppler information.
Option C: While correct, this is incomplete. Tracking programs also provide maps and pass predictions.
题目解析
The correct answer is D: All these choices are correct. Satellite tracking programs provide maps showing real-time satellite position, time/azimuth/elevation of passes, and apparent frequency including Doppler shift. These programs use orbital elements (Keplerian elements) to calculate and display satellite positions, predict passes, and account for Doppler frequency shift. For amateur radio operators, tracking programs are essential tools for satellite operation, helping you know when satellites are visible, where to point your antenna, and what frequency to use (accounting for Doppler). Understanding what tracking programs provide helps you use them effectively.
考试技巧
All three are provided by tracking programs: maps, pass predictions, Doppler shift. When all options are correct features, 'all of the above' is usually the answer. Tracking programs are comprehensive tools for satellite operation.
记忆口诀
Tracking programs provide all: Maps, Pass predictions, Doppler shift. Think 'T'racking 'P'rograms = 'T'otal 'P'lanning tools. Comprehensive information for satellite operation.
实际应用示例
You use a satellite tracking program to plan a contact. It shows: (1) A map with the satellite's current position and ground track, (2) The next pass with start time (14:30), maximum elevation (45° at 14:35), and end time (14:40), and (3) The frequency you should use (145.950 MHz) accounting for Doppler shift. All this information helps you successfully work the satellite.
错误选项分析
Option A: While correct, this is incomplete. Tracking programs also provide pass predictions and Doppler information. Option B: While correct, this is incomplete. Tracking programs also provide maps and Doppler information. Option C: While correct, this is incomplete. Tracking programs also provide maps and pass predictions.
知识点
Satellite tracking programs, Orbit prediction, Doppler shift, Satellite operation
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.