Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/4160
Authors: | Betti, B.* Biagi, L.* Crespi, M* Riguzzi, F.* |
Title: | GPS sensitivity analysis applied to non-permanent deformation control networks | Journal: | Journal of Geodesy | Series/Report no.: | /73 (1999) | Publisher: | Springer-Verlag | Issue Date: | 1999 | Keywords: | GPS Sensitivity Accuracy Deformation experiment Non-permanent array |
Subject Classification: | 03. Hydrosphere::03.02. Hydrology::03.02.07. Instruments and techniques | Abstract: | This paper illustrates the surveys and the results obtained in an experiment whose goal is to evaluate the Global Positioning System (GPS) sensitivity and accuracy for deformation control on non-permanent network of di fferent extensions. To this aim a high-precision device was properly built to set up known displacements along three orthogonal axes of a GPS antenna. One of the antennas in the considered GPS networks was moved according to centimeter and sub-centimeter displacements; after careful GPS data pro- cessing, it was evaluated whether these simulated deformations were correctly a posteriori detected and at which probability level. This experiment was carried out both on a local (baselines ranging between 3 and 30 km)and on a regional (baselines ranging between 300 and 600 km) GPS network. The results show that in the local network it is possible to identify the displacements at a level of 10 mm in height and at a level of 5 mm in horizontal position. The analysis of the regional network showed that it is fundamental to investigate new strategies to model the troposphere; in fact, it is necessary to improve the precision of the height in order to correctly identify displacements lower than 60± 80 mm; on the contrary, horizontal displacements can be evidenced at the level of 20 mm. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
Betti et al., 1999.pdf | article | 193.49 kB | Adobe PDF |
Page view(s) 20
223
checked on Mar 27, 2024
Download(s)
27
checked on Mar 27, 2024