Fortune Telling Collection - Zodiac Guide - The layout of GPS satellites ensures that at least () satellites can be observed at any time and any place on the earth.
The layout of GPS satellites ensures that at least () satellites can be observed at any time and any place on the earth.
Answer: 4
Analysis:
Composition of GPS global positioning system
① Space part-GPS satellite constellation. The space satellite constellation of GPS consists of 24 satellites. Satellites are distributed in six orbital planes, with an average of four satellites in each orbit. The distribution of GPS satellite space constellations ensures that at least four satellites can be observed at any time on the earth, and the transmission and reception of satellite signals are not affected by the weather.
② Ground monitoring part-ground monitoring system. The ground control part includes 1 master control station, 3 information injection stations and 5 satellite monitoring stations.
③ The user part-GPS receiver also includes antenna unit and receiving unit.
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