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Granas, a New Satellite-based Navigation System

Published online by Cambridge University Press:  23 November 2009

H. Euler  and
G. Hoefgen
H. Euler
Affiliation:
(Standard Elektrik Lorenz AG)
G. Hoefgen
Affiliation:
(Standard Elektrik Lorenz AG)
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Extract

Granas (Global RAdio NAvigation System) is a satellite-based radio navigation system with global coverage, high accuracy and continuous availability for civil users on land, sea and air. Its performance, thus, is superior to existing ground-based radio navigation systems as Omega, Loran, Decca, and so on.

The principle of Granas user-position determination is similar to that of Navstar GPS or Navsat in that a user makes pseudo-range measurements to a number of satellites visible above a 5° elevation angle. These ranging operations are performed using time-of-arrival (TOA) measurements of navigation signals transmitted by satellites. Knowing the discrete positions of four or more satellites and their pseudo-ranges, a user may compute its own clock bias and its position in three dimensions (longitude, latitude and altitude).

Type
The Use of Satellites in Navigation
Information
The Journal of Navigation , Volume 37 , Issue 3 , September 1984 , pp. 354 - 359
Copyright
Copyright © The Royal Institute of Navigation 1984

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References

REFERENCES

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4Yonezawa, K. (1978). Evaluation of geometric performance of global positioning system. IEEE Trans. Aerosp. Electron. Syst., Vol. AES-14, No. 3, May.Google Scholar