In 2009, the IGMI (Italian Geographic Military Institute) defined a new geodetic reference frame (ETRF2000) based on the new Italian geodetic reference frame RDN (Rete Dinamica Nazionale), a network consisting of about 100 permanent GNSS stations homogeneously distributed throughout the Italian peninsula. A key characteristic of the RDN network is its dynamic nature: the coordinates of the GNSS stations will be computed periodically to take into account the natural changes of the crustal surface. To date, a first computation of the RDN has been implemented during January 2009 by the IGMI using a dataset of 28 Julian Days and the Bernese scientific software. For the validation of the network, other Analysis Centers have been involved in the computation using the same software. One of these Analysis Centers is the Dept. DISTART (University of Bologna) that for this computation has used tree different software packages. This paper presents data-processing results for the same dataset (kindly provided by the IGMI) obtained using Gipsy-Oasis II, Bernese V.5.0 and Gamit-Globk software packages. In order to be aligned with the EUREF guidelines for network densifications an harmonization of the ancillary products and options has been necessary. For the results comparison, some statistical parameters derived by the solutions have been considered. The first comparison has been performed between the Bernese solution of IGMI and the DISTART Dept. one: the differences are at millimeter level. Concerning the comparison of solutions derived by different software packages a very good agreement (at millimeter level) between Bernese and Gamit has been found. Gipsy solution, obtained in PPP and without any ambiguity resolution, presents an slightly higher scattering (but still at millimeter level) than others two.
Maurizio Barbarella, Stefano Gandolfi, Luciano Ricucci, Antonio Zanutta (2009). The new Italian geodetic reference network (RDN): a comparison of solutions using different software packages. EUREF.
The new Italian geodetic reference network (RDN): a comparison of solutions using different software packages
BARBARELLA, MAURIZIO;GANDOLFI, STEFANO;RICUCCI, LUCIANO;ZANUTTA, ANTONIO
2009
Abstract
In 2009, the IGMI (Italian Geographic Military Institute) defined a new geodetic reference frame (ETRF2000) based on the new Italian geodetic reference frame RDN (Rete Dinamica Nazionale), a network consisting of about 100 permanent GNSS stations homogeneously distributed throughout the Italian peninsula. A key characteristic of the RDN network is its dynamic nature: the coordinates of the GNSS stations will be computed periodically to take into account the natural changes of the crustal surface. To date, a first computation of the RDN has been implemented during January 2009 by the IGMI using a dataset of 28 Julian Days and the Bernese scientific software. For the validation of the network, other Analysis Centers have been involved in the computation using the same software. One of these Analysis Centers is the Dept. DISTART (University of Bologna) that for this computation has used tree different software packages. This paper presents data-processing results for the same dataset (kindly provided by the IGMI) obtained using Gipsy-Oasis II, Bernese V.5.0 and Gamit-Globk software packages. In order to be aligned with the EUREF guidelines for network densifications an harmonization of the ancillary products and options has been necessary. For the results comparison, some statistical parameters derived by the solutions have been considered. The first comparison has been performed between the Bernese solution of IGMI and the DISTART Dept. one: the differences are at millimeter level. Concerning the comparison of solutions derived by different software packages a very good agreement (at millimeter level) between Bernese and Gamit has been found. Gipsy solution, obtained in PPP and without any ambiguity resolution, presents an slightly higher scattering (but still at millimeter level) than others two.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
