An Application of Wide-Lane to Long Baseline GPS Measurements (3)

H. Isshiki

Abstract:	The precise estimation of the initial phase ambiguities of L1 wave (or those of the ion-free combinations) is not solved completely in case of the long baseline kinamatic solutions. The complete solution of this problem without the assistance from external sources seems impossible in the framework of the present dual frequency system of L1 and L2 waves. When the GPS Modernization is realized, a new wave L5 joins and it become a triple frequency system. Two independent geometry-free combinations are then obtained for each double difference observation made from a pair of satellites and a pair of receivers. This makes it possible to determine the initial phase ambiguity and the ionospheric delay of the double difference. In the present report, a method to determine the ionospheric delays, ambiguities and coordinates is discussed.
Published in:	Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003) September 9 - 12, 2003 Oregon Convention Center Portland, OR
Pages:	2129 - 2141
Cite this article:	Isshiki, H., "An Application of Wide-Lane to Long Baseline GPS Measurements (3)," Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003), Portland, OR, September 2003, pp. 2129-2141.
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