Approccio differenziato per la validazione dei dati GPS provenienti dalla rete UNIPA

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[automatically translated] In this work it has proposed the initial quality control and subsequent processing of the observations from the permanent stations belonging to the network of the University of Palermo, PRIN2005 created under the project entitled: "GPS permanent station networks for the relief Real-time in emergency and control applications "and managed by the Department of Civil, Environmental and Aerospace. This network is currently composed of nine permanent stations located at the Faculty of Engineering of the University of Palermo and other public institutes or bodies present in the town of Termini Imerese (PA), Trapani, Agrigento, Caltanissetta, Partinico (PA), Campobello di Mazara (TP), Prizzi (PA), Alcamo (TP). The work is related to a time period between January of 2008 and August of 2010. For the processing of raw data have been employed three different scientific TEQC software, QC2SKY and NDA Lite, who returned full correspondence of the results. In particular, it can be observed how all the stations have presented high levels of quality both in terms of the received signal strength (SNR), which in terms of multipath and cycle slips. Following the results obtained from the initial data quality control operations it has passed the compilation and estimation of the permanent stations coordinates through the use of scientific software NDA Professional. the influences of different tropospheric and ionospheric models were evaluated. It is observed that, with respect to data used eai conditions imposed, the results are independent of the tropospheric model used (with the same ionospheric model). The same can not be said for that which concerns the dependence of the results from the choice of the error correction ionospheric model; the initial choice covered the Euler model and Goad. Subsequent analyzes were conducted through the use of the Klobuchar-style factors calculated by the Centre for Orbit Determination in Europe (CODE) of the University of Bern. It is seen as a result of this choice, the accuracy of the calculated coordinates, evaluated through the analysis of the standard deviations, is increased in an absolutely clear. Finally, the statistical survey was carried out on the time series resulting from the processing using its own means of spectral analysis, such as the Fast Fourier Transform.
Original languageItalian
Number of pages0
Publication statusPublished - 2011

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