How many satellites make up the Global Positioning System (GPS)?
A
22.
B
24.✓ Correct Answer
C
25.
Explanation
AIM 1-1-17 describes GPS as a 24-satellite constellation designed so that at least five satellites are always in view anywhere in the world. More satellites are usually in orbit as active spares, but the system is defined by the 24-satellite baseline, not 22 or 25.
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