Provison of Real-time Troposphere Delay Corrections by Utilization of General Purpose Graphics Processing Units

Troposphere delays are one of the major error sources of space geodetic and remote sensing techniques. Unlike ionospheric delays, which have a dispersive characteristics and thus can be canceled out by dual-frequency measurements, atmospheric propagation effects have to be modeled within the post-processing or model adjustment stage. Many space-geodetic techniques apply so-called mapping functions which relate slant troposphere delays to zenith equivalents, that are estimated together with the target parameters. On the other hand, atmosphere delays within remote sensing techniques are neglected or considered only by simple models, which are not capable to represent larger areas or complex weather phenomena.