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Principles and Present Status

Published online by Cambridge University Press:  23 November 2009

G. E. Cook
G. E. Cook
Affiliation:
(Royal Aircraft Establishment)
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Extract

The Navstar Global Positioning System (GPS) is a satellite-based passive radio-navigation system under development by the US Department of Defense (DOD) and due for operational deployment in the late 1980s. Each satellite carries an atomic frequency standard and transmits L-band spread-spectrum signals whose carrier frequencies and code epochs are synchronized with the satellite clocks. A suitably equipped user may measure the arrival time and frequency of the signals from at least four satellites to obtain accurate three-dimensional position and velocity information and, as a by-product, an accurate ‘system’ time.

Type
Navstar GPS for Sea and Air Navigation
Information
The Journal of Navigation , Volume 36 , Issue 3 , September 1983 , pp. 341 - 350
Copyright
Copyright © The Royal Institute of Navigation 1983

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References

REFERENCES

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