Final results of the Italian«Rete Dinamica Nazionale» (RDN) of Istituto Geografico Militare Italiano (IGMI) and its alignment to ETRF2000

摘要

We present the general aspects, the main features and the final results of the Rete Dinamica Nazionale (RDN), the new geodetic reference frame system for Italy adopted from January 1th 2009. RDN which means National Dynamic Network is aligned to the most recent official realization of ETRS89, ETRF2000 at the epoch 2008.0. It will update the previous Italian realisation of ETRS89, materialized with the IGM95 frame. RDN consists of a network of 99 GPS permanent stations aligned to 13 IGS fiducial stations included in the ITRF2005 solution. The other stations were selected taking into account the homogeneous spatial distribution and the quality of location and equipment. The observation campaign lasts 28 days, from 23th December 2007 to 19th January 2008 and the data are daily files in RINEX format with 30 seconds sample rate. The computation was performed by the Data Processing Centre of the Geodetic Service of Istituto Geografico Militare Italiano (IGMI) and the processing strategy followed the standard procedures adopted by EUREF guidelines. The same computation also was performed independently by University of Padova (prof. Caporali) and by the G3 group in Milano (prof. Sanso) in order to test the results. In this article we show all the processing steps until the final results and then all the comparisons with other data centers.