Mapping the Horizontal Gradients on a Four Station Network

I. M. Ifadis

Abstract:	In most atmospheric delay mapping techniques the earth is assumed to be spherical and the atmosphere spherically stratified. This simplified approach usually introduces an error in the atmospheric effect prediction and this is well known since nobody is really expecting an ideal stratification of the atmosphere during any kind of observations. Even more, the earth’s shape is not spherical, being an ellipsoid, a fact that also may introduces an error, while the atmosphere is expected to be thinner close to the poles. It is true that some researchers performed work dealing with such problems and suggested some kind of models to be applied. In this report we work not only with what was said in the above but also we use experimental data from a four station network. These stations are close enough to each other so we can form a 3d atmospheric model for all simultaneous observations. After that we can calculate the delays and compare the results with those we get for each separate station. The differences are tabulated and compared with existing theoretical 3d delay models, and therefore we can get some useful conclusions.
Published in:	Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation (2000) June 26 - 28, 2000 The Catamaran Resort Hotel San Diego, CA
Pages:	772 - 780
Cite this article:	Ifadis, I. M., "Mapping the Horizontal Gradients on a Four Station Network," Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation (2000), San Diego, CA, June 2000, pp. 772-780.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In