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Figure 1

Fig. 1. The principle of satellite navigation. The user-satellite range measurements based on the times of transmission and receipt of the signals are biased by a common amount due to offset between the satellite and receiver clocks; they are called pseudoranges. Pseudorange measurements from four satellites are needed to estimate the user position and the corresponding receiver clock bias.


Proceedings of the IEEE    January, 1999    Volume 87    Number 1    

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