TITLE

TOMOGRAPHIC APPROACH FOR TROPOSPHERIC WATER VAPOR DETECTION

AUTHOR(S)
Miidla, P.; Rannat, K.; Uba, P.
PUB. DATE
July 2008
SOURCE
Computational Methods in Applied Mathematics;2008, Vol. 8 Issue 3, p263
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The technical successes in radio navigation and the availability of numerical algorithms have promoted the implementation of GPS-technology to atmospheric sciences. The tomographical contribution of Global Satellite Navigation Systems (GNSS) is possible due to the methods of high precision detection of tropospheric delays of navigation signals from satellites to receivers. The principal specific character in initial constraints, data collection and assimilation methods, the obtaining of final numerical results and their interpretation make the continuation of the success story for GPS-tomography very challenging. The authors use numerical simulation as the most time-and cost-efficient way to study different processes related to tropospheric water vapor tomography. This paper tends to give a short overview about some known methods in GPS-tomography for detection, monitoring and modeling of the tropospheric water vapor. The possible mathematical approach to the construction of virtual network of ground-based sensors (GPS-receivers) for a real geographical location and discretization of the troposphere, also some aspects of raw data filtering and analysis are described. Output of tomographical modelling of the troposphere can be used to improve the results of large-scale numerical weather prediction models and also real-time navigation. The questions of voxel geometry and methods of data processing are supposed to be the key questions in constructing an effective network of GPS-receivers for water vapor tomography.
ACCESSION #
34999306

 

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