Scanning the Issue/Technology -- GPS
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Figure 2

Fig. 2. The GPS constellation consists of six orbital planes with four satellites in each plane. Each satellite is identified with a two-character code: a letter identifies the orbital plane (A through F) and a number identifies the satellite number in the plane (1 through 4).

Proceedings of the IEEE    January, 1999    Volume 87    Number 1    

(c) Copyright 1999, The Institute of Electrical and Electronics Engineers, Inc.