Optimal data processing strategy in precise GPS leveling networks

Troposphere Modeling and Filtering for Precise GPS Leveling

Estimation of Local Subsidence Using GPS and Leveling Combined Data

The leveling measurements have been traditionally made for the monitoring of ground subsidence, but this technique is known to be not timeand cost-effective. Instead, GPS has been recently used as one of the most convenient and precise techniques for the geodetic applications, in terms of high accuracy monitoring. A GPS monitoring network consisting of 52 GPS stations was set up in Yunlin Count...

Improving Egm2008 by Gps and Leveling Data at Local Scale

The development of the Earth Gravitational Model 2008 (EGM2008) model is a significant contribution for modeling the Earth’s gravity and geoid. Recently, it can be confidently used versus geometric models following a simple refinement procedure. Several studies show that, EGM2008 can reach the accuracy of regional or local geoid models after modeling the differences between the GPS-leveling geo...

Comparing GPS, Optical Leveling and Permanent Scatterers

Subject of this paper is the comparison of the results obtained exploiting the Permanent Scatterers (PS) Technique on ERS DInSAR data with displacement measurements carried out by means of optical leveling and GPS.

Precise Ionosphere Modeling Using Regional GPS Network Data

The ionosphere affects the electromagnetic waves that pass through it by inducing an additional transmission time delay. The ionosphere influence has now become the largest error source in GPS positioning and navigation after the turn-off of the Selective Availability (SA). In this paper, methods of 2D gridbased and 3D tomography-based ionospheric modeling are developed based on regional GPS re...