Precise Rapid Surveys Using a Combination of Code and Carrier Measurements

Caroline Erickson, Gérard Lachapelle, and She Bin Bin

Abstract:	This paper investigates the use of code-aided carrier phase measurements for ambiguity resolution to shorten the observation time of static GPS surveys. Actual results conducted over a zero baseline with two NovAtel GPS CardTM units are presented. One of the unique characteristics of this new receiver is its decimetre C/A code accuracy which enables effective rapid carrier phase ambiguity resolution. The results show that the ambiguities could be resolved in 50% of the cases after one minute and in 90 to 100% of the cases within two to five minutes. The cases for which the ambiguities were not resolved are likely due to residual multipath effects. The impact of the above important technological advance on rapid static surveys for both short and long baselines and on-the-fly ambiguity resolution for kinematic GPS surveys is discussed.
Published in:	Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991) September 11 - 13, 1991 Albuquerque, NM
Pages:	691 - 698
Cite this article:	Erickson, Caroline, Lachapelle, Gérard, Bin, She Bin, "Precise Rapid Surveys Using a Combination of Code and Carrier Measurements," Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991), Albuquerque, NM, September 1991, pp. 691-698.
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