Abstract
The noise term of GPS phase data can be calculated from the measured carrier-to-noise power density ratios (C/N0). The C/N0 values are used in the proposed SIGMA-ɛ model to calculate the variance matrix of double-differenced GPS phase data. Examples show the capability of this model to yield higher accuracies for GPS surveys than the use of the standard weighting scheme. Most importantly, the SIGMA-ɛ model allows the use of noisier phase data from very low elevation satellites to overcome poor satellite geometry problems. © 1999 John Wiley & Sons, Inc.
Similar content being viewed by others
Explore related subjects
Find the latest articles, discoveries, and news in related topics.Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hartinger, H., Brunner, F. Variances of GPS Phase Observations: The SIGMA-ɛ Model. GPS Solutions 2, 35–43 (1999). https://doi.org/10.1007/PL00012765
Published:
Issue Date:
DOI: https://doi.org/10.1007/PL00012765