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 different 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 processing, 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.

GPS sensitivity analysis applied to non-permanent deformation control networks / B., Betti; L., Biagi; Crespi, Mattia Giovanni; F., Riguzzi. - In: JOURNAL OF GEODESY. - ISSN 0949-7714. - STAMPA. - 73:3(1999), pp. 158-167. [10.1007/s001900050231]

GPS sensitivity analysis applied to non-permanent deformation control networks

CRESPI, Mattia Giovanni;
1999

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 different 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 processing, 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.
1999
accuracy; deformation experiment; gps; non-permanent array; sensitivity
01 Pubblicazione su rivista::01a Articolo in rivista
GPS sensitivity analysis applied to non-permanent deformation control networks / B., Betti; L., Biagi; Crespi, Mattia Giovanni; F., Riguzzi. - In: JOURNAL OF GEODESY. - ISSN 0949-7714. - STAMPA. - 73:3(1999), pp. 158-167. [10.1007/s001900050231]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/364045
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 29
  • ???jsp.display-item.citation.isi??? 27
social impact