The treatment of time series data of GPS permanent stations for extracting geodetic signals

• Autorzy: Vespe F. , Pacione R. , Rutigliano P.
• Konferencja: 7th Bilateral Geodetic Meeting Italy-Poland (7; 22-24.05.2003; Bressanone, Italy)
• Języki publikacji: EN

Abstrakty

EN

It is well known that the coordinates and the zenith total delays, estimated by the GPS, provide a big amount of information. Currently a lot of stations with a very long data time series are present all over the world which make now feasible to perform a critical analysis of the coordinates helpful for the detection of signals, such as: height displacements, velocities and strain rate suitable for geophysical interpretations. In the present work a method to assess the reliability of the time series is described and applied to some stations with a period of observations long 5 years at least. The method essentially build a "fingerprint" which give information how long time a signal can emerge from the time series. Furthermore with the method, harmonic signatures and jumps on the time series are detected and analysed. The method does not only detects the value of the jumps but also where they are placed along the time series. The good efficiency in the detection and evaluation of jumps is of utmost importance because they introduce spurious signatures which could dramatically delay the enhancement of the signals. So our method allows to detect jumps that could be neglected or not assessed or be themselves a signal to detect.

Słowa kluczowe

EN

GPS system; maritime navigation

PL

GPS system; nawigacja satelitarna

• Wydawca: Wydział Geodezji i Kartografii Politechniki Warszawskiej
• Czasopismo: Reports on Geodesy
• Rocznik: 2003
• Tom: z. 2/65
• Strony: 53--63
• Opis fizyczny: Bibliogr. 13 poz., wykr., schem.

Twórcy

autor

Vespe F.

• Agenzia Spaziale Italiana, Centro di Geodesia Spaziale "G. Colombo"

autor

Pacione R.

• Telespazio S.p.A., Centro di Geodesia Spaziale "G. Colombo"

autor

Rutigliano P.

• Telespazio S.p.A., Centro di Geodesia Spaziale "G. Colombo"

Bibliografia

• [1] Ambrico F., D. Del Rosso, E. Lunalbi, (2000), Survey of the Medicina site, Telespazio spa Doc. Nr.: 180.010-CSM-MED-Medicina2000
• [2] Blewitt G., D. Lavalée (2000). Effect of Annual repeating Signals on Geodetic Velocity Estimates In Extended Abstracts Book of Tenth General Assembly of the WEGENER Project, WEGENER Meeting, S. Fernando, Spain
• [3] Carminati E., G. Di Donato G. (1999) Separating Natural and Anthropogenic Vertical Movements in Fast Subsiding Areas: the Po plain (N. Italy) case, Geophys. Res. Lett., 26, No 15, 2291-2294
• [4] Devoti R., C. Ferraro, R. Lanotte, V. Luceri, A Nardi, R. Pacione, P. Rutigliano, C. Sciarretta, G. Bianco, F. Yespe (1998), Height Time Series of the Italian GPS Fiducial Network Compared with VLBI and SLR Estimations In: JAG Symposia: Towards an Integrated Global Geodetic Observing System (IGGOS), Vol. 120, 130-133,
• [5] Doglioni C. (1994), Foredeeps versus subduction zones. Geology, 22: 271-274
• [6] McCarthy D.D., IERS Conventions (1996), IERS Technical Note, 21 Observatoire de Paris
• [7] Pacione R., F. Vespe; ASI Semi Annual Report for MAGIC, Project Funded by E. U., September, 2000
• [8] Rutigliano P., Vespe F., C. Ferraro, R. Lanotte, A Nardi (2000), Analysis of the vertical velocities estimated from GPS data to detect non-tectonic signal, presented at EGS -XXVI General Assembly
• [9] Scargle J.D., (1982) Studies in Astronomical Time Series Analysis II. Statistical Apects of Spectral Analysis of Unevenly Spaced Data, Astrophis. Jou., 263:835-853,
• [10] Sclater J.G, P.A.F.Christie, (1980) Continental stretching: an explanation of the post-midCretaceous subsidence of the central north Sea basin, J. Geophys. Res.,85, 3711-3739
• [11] Van Dam T., J. Wahr, C. Milly, A Smakin, G. Blewitt, D. Lavalee (2001), Crustal Displacements Due to Continental Water Loading, Geophys. Res. Lett., 28, No 4, 651-654
• [12] Vespe F., Rutigliano P., Ferraro C., Nardi A., (2001), Quality Assessment and Signals Detection from GPS Time Series, EUREF 2001 Proceedings
• [13] Wolfram S., The Mathematica Book, 4th Edition, (1999) Wolfram Media Cambridge University Press