Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 4 of 4 for “"tropospheric delay"”.
-
Influence of various troposphere modelling and estimation techniques on precise position estimation of permanent GPS arrays
… elevation data (down to 5°), various a priori tropospheric delay models, mapping functions as well as the influence of tropospheric gradient parameters estimation on station position, precision and accuracy, in order to ascertain the optimal combination to use in routine processing of TrigNet …
-
Modeling the Neutral Atmosphere in Continuously Operating GNSS Networks using OPUS-Projects
… Some recent studies have shown that tropospheric delay is one of the most challenging and essential error sources in space-based geodetic applications; especially, in the determination of ellipsoidal height, if it is not sufficiently accounted for.</p><p>This thesis focuses on …
-
Effects of atmospheric pressure loading on GPS measurements
… during the winter and/or mismodeling of tropospheric delay during summer months [Herring, 1990]. As for the contribution due to multiple sources of loading, in most cases, by adding an expected water load (from upper 2 meters of soil) to the atmospheric pressure load, a closer agreement …
-
Peer PPP-RTK: toward an affordable real-time high accuracy service
… through the exchange of precise Ionospheric and Tropospheric estimates between peers. The PPP-AR (PPP Ambiguity Resolution) technique, based on the use of precise satellite orbit and clocks, needs satellite biases estimates provided to receivers by external sources. It also usually requires a …