ION Technical Content
Ambiguity Resolution in the Fast Lane
| Abstract: | Resolution of the initial carrier cycle ambiguity in a kinematlc environment is described in this paper. Extra satellites provide measurement redundancy which can be used to very quickly resolve the correct initial cycle ambiguity, even while the remote site is moving. Most methods which have been used to resolve cycle ambiguities in a kinematic environment place severe limitations on the separation distance between the control site and remote site receivers. By making use of both the L1 and L2 frequencies, the techniques described are shown to apply to separation distances from the very short to the very long. At very short distances, ambiguity resolution in the kinematic environment is essentially equivalent to the problem of ambiguity resolution for the determination of attitude. And the attitude determination problem is used to illustrate the kinematic problem. At long distances the ionospheric refraction problem requires the use of two frequencies. A way in which the two frequencies can be used to form a wide (86 centimeter) difference frequency ambiguity and yet still be used to correct for the ionosphere is described. |
| Published in: |
Proceedings of the 2nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1989) September 27 - 29, 1989 The Broadmoor Hotel Colorado Spring, CO |
| Pages: | 45 - 50 |
| Cite this article: | Hatch, Ron, "Ambiguity Resolution in the Fast Lane," Proceedings of the 2nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1989), Colorado Spring, CO, September 1989, pp. 45-50. |
| Full Paper: |
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