Proceedings of the Korean Institute of Navigation and Port Research Conference (한국항해항만학회:학술대회논문집)

Korean Institute of Navigation and Port Research (한국항해항만학회)
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The Benefit of Ambiguity Resolution Using Triple Frequency

  • Tominaga, Reiji (Student Member of Tokyo University of Marine Science and Technology) ;
  • Gomi, Yasuto (Student Member of Tokyo University of Marine Science and Technology) ;
  • Zhang, Yun (GEOSURF corporation) ;
  • Kubo, Nobuaki (Tokyo University of Marine Science and Technology) ;
  • Yasuda, Akio (Tokyo University of Marine Science and Technology)
  • Published : 2006.10.18
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Abstract

Modernized GPS will have three frequencies modulated with three signals, which will be accessible to all users in the near future. This new frequency provides an opportunity to resolve the double differenced (DD) integer ambiguity very fast and with almost no baseline constraints. In order to study the performance of triple frequency system for Ambiguity Resolution (AR) over the medium baseline under different ionospheric levels, the Klobuchar Model was implemented and used in our triple simulation to generate the ionospheric delay. Furthermore, the White-Gaussian noise applying to distance-dependent parameters was added to the DD ionospheric delay. For medium baseline (defined as here 20 to 40kms), success rates of AR has been pretty improved. In this paper, the medium baseline AR strategies that take advantage of carrier phase measurement on the third frequency will be discussed.

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