Abstract
In this paper we dwell upon the possibility to determine the GPS phase ambiguities from double difference triple frequency GPS phase and code data more or less instantaneously. We take advantage of the well known fact, that the widelane ambiguity is easily fixed from such observables. It is shown that this holds also for a third signal of carrier wavelength (λ3) in the range 14.3 cm ≤ λ3 ≤ 30.0 cm. At the limits λ3 = 14.3 cm (2100.6 MHz) and λ3 = 30.0 cm (997.1 MHz) the base ambiguities are easily fixed as soon as the widelane ambiguities have been determined. For other choices of λ3 the method is less optimal.
Recently the US Department of Defence announced that GPS satellites launched after December 2004 will be equipped with three civil GPS signals, where L1 and L2 are the same as today’s signals, and the third signal will operate in the frequency 1176.45 MHz (λ3 = 25.44 cm). This design will allow rapid precise position over long baselines with significant ionosphere biases.
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References
Almgren, K.: A new method for GPS phase ambiguity resolution on-the-fly, Division of Geodesy Report No. 1047, Royal Institute of Technology, Stockholm, 1998. (Doctoral Dissertation.)
Sjöberg, L. E.: Application of GPS in detailed surveying, ZfV, Vol. 121, No. 10, pp. 485–491, 1996.
Sjöberg, L. E.: On optimality and reliability for GPS base ambiguity resolution by combined phase and code observables. ZfV, Vol. 122, no 6, pp. 270–275, 1997.
Sjöberg, L. E.: A new method for GPS base ambiguity resolution by combined phase and code observables. Survey Review, 34, 268, 363–372, 1998.
Sjöberg, L. E.: Unbiased vs biased estimation of GPS phase ambiguities from dual frequency phase and code observables. Journal of Geodesy (in print), 1999.
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© 2003 Springer-Verlag Berlin Heidelberg
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Sjöberg, L.E. (2003). Triple Frequency GPS for Precise Positioning. In: Grafarend, E.W., Krumm, F.W., Schwarze, V.S. (eds) Geodesy-The Challenge of the 3rd Millennium. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-05296-9_14
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DOI: https://doi.org/10.1007/978-3-662-05296-9_14
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-07733-3
Online ISBN: 978-3-662-05296-9
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