The switch from relative to absolute phase centre variation model and its impact on coordinate estimates within local engineering networks
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Junbo Shi
Abstract
The IGS announced the switch from a relative to an absolute phase centre variation model on 5 October 2006 after detailed discussions concerning how the model switch would benefit global and regional networks, as well as the IGS products. However, there was no dedicated study on the major concern of this paper – the influence of the model switch on local engineering networks, especially on coordinate estimates, which are key factors in engineering constructions. The data set considered in this paper is a bridge control network with baselines ranging in length from 200 to 7000 metres, utilising different GPS antenna types. In addition, high correlations between coordinate estimates, antenna phase centre variations and troposphere parameters are also considered. The results demonstrate that the antenna model switch does not produce significant differences to coordinate estimates within local engineering networks.
© de Gruyter 2008
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Articles in the same Issue
- On-the-job detection and correction of systematic cyclic distance measurement errors of terrestrial laser scanners
- Design and analysis of a multi-sensor deformation detection system
- A model for predicting GPS-GDOP and its probability using LiDAR data and ultra rapid product
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- Reference point determination with a new mathematical model at the 20 m VLBI radio telescope in Wettzell
- Morphological updating on the basis of integrated DTMs: study on the Albano and Nemi craters
- 9th Conference on Optical 3-D Measurement Techniques
