What is the orbital altitude of GPS satellites in kilometers?

Study for the Advanced Avionics Test. Challenge yourself with engaging multiple choice questions and detailed explanations. Prepare thoroughly for your exam!

Multiple Choice

What is the orbital altitude of GPS satellites in kilometers?

Explanation:
GPS satellites are placed in a medium Earth orbit about 20,200 kilometers above the Earth’s surface. That specific altitude is chosen because it produces a 12-hour orbital period and a favorable geometry for global coverage, giving receivers a reliable four-satellite geometry for accurate positioning. On exams, the standard cited altitude is about 20,200 kilometers, which is why this figure is selected. The other numbers don’t match the well-established GPS altitude and would change the orbit’s period and coverage characteristics.

GPS satellites are placed in a medium Earth orbit about 20,200 kilometers above the Earth’s surface. That specific altitude is chosen because it produces a 12-hour orbital period and a favorable geometry for global coverage, giving receivers a reliable four-satellite geometry for accurate positioning. On exams, the standard cited altitude is about 20,200 kilometers, which is why this figure is selected. The other numbers don’t match the well-established GPS altitude and would change the orbit’s period and coverage characteristics.

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