Walker Constellation — Lesson 9

Constellations are a group of satellites working in unison to complete a mission objective. A Walker constellation consists of either a plane or multiple planes where each plane contains several satellites spaced in different locations.

Common Uses and Benefits: The GPS constellation is a well-known example of a Walker constellation with six orbital planes and four satellites per plane. The planes are equally spaced 60° longitude apart, allowing the constellation to provide global coverage of the earth.