Space exploration - Space applications | Britannica
What's the altitude of a typical artificial satellite, and how can I see one? | Astronomy.com
Characterization of on-orbit GPS transmit antenna patterns for space users | NAVIGATION: Journal of the Institute of Navigation
Satellites and orbits — Science Learning Hub
Feb. 14, 1989: GPS Enters Orbit | WIRED
GPS IIR/IIR-M satellite antenna patterns released for worldwide use - GPS World
GPS - Global Positioning System satellite — Astronoo
Determining the Height of GPS Satellites
Global Positioning System (GPS). n 24 satellite constellation u Semi-synchronous, circular orbits (~20,200 km/10,900 nautical miles altitude) u Six orbital. - ppt download
orbit - Why do gps satellites rotate over the Earth - Space Exploration Stack Exchange