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Thessaloniki Continuous Reference GPS Station: Initial Estimation of Position

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Thessaloniki Continuous Reference. GPS Station: Initial Estimation of Position ... 36.5 mm (Vert. Std. Dev.) P.Savvaidis, I. Ifadis, K. Lakakis ... – PowerPoint PPT presentation

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Title: Thessaloniki Continuous Reference GPS Station: Initial Estimation of Position


1
Thessaloniki Continuous Reference GPS Station
Initial Estimation of Position
  • P.Savvaidis, I. Ifadis, K. Lakakis
  • Laboratory of Geodesy
  • Department of Civil Engineering
  • Aristotle University of Thessaloniki

2
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • Established Autumn 1999 at the facilities of the
    Laboratory of Geodesy
  • Continuous 24h operation since February 2000

3
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • Ashtech Z-12 Continuous Reference Receiver
  • Choke-Ring Antenna
  • Ashtech Geodetic Base Station Software (GBSS)

4
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • To be used for
  • Geodynamical applications
  • As a Reference GPS Station for surveying in the
    area of Thessaloniki
  • RTCM corrections transmitted for Real Time
    Kinematic GPS applications, emphasis given to
    vehicle navigation in the area of greater
    Thessaloniki

5
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • The seismic area of Volvi (near Thessaloniki)
  • 1978 earthquake

6
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • Control network with terrestrial observations
    (1978 - 1985)

7
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • GPS measurements in a larger area, incl.
    Thessaloniki (1994, 1997)
  • Permanent monitoring GPS Array under development
    (2001)

8
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
9
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • UHF Radio Network for RTCM corrections
    transmission
  • Control Station for Vehicle Navigation
    applications

10
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • Initial Estimation of Position
  • ITRF97 coordinates
  • IGS Stations ONSALA, HERS, GLSV, GRAZ, MAD2,
    SFER, NOTO, CAGLIARI, MEDICINA, MATERA, SOFI,
    TUBI, ZECK, NICO, RAMO, (TUC1)
  • Adjustment 42.8 mm (Horiz. Std.Dev.)
  • 36.5 mm (Vert. Std. Dev.)

11
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • Adjustment using stations NOTO, MATERA, SOFI,
    NICO
  • ITRF97 coordinates
  • Raw data March 2000
  • 14.2 mm (Horiz. Std.Dev.)
  • 12.9 mm (Vert. Std. Dev.)

12
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • Adjustment using stations NOTO, MATERA, SOFI,
    NICO
  • ITRF97 coordinates updated March 2000
  • Raw data March 2000
  • 10.7 mm (Horiz. Std.Dev.)
  • 9.4 mm (Vert. Std. Dev.)

13
P.Savvaidis, I. Ifadis, K. Lakakis Thessaloniki
Continuous Reference GPS StationInitial
Estimation of Position
  • Coordinates of THES1
  • ITRF97
  • X4463666.690 m 7.8 mm
  • Y1890982.232 m 8.6 mm
  • Z4131185.946 m 5.0 mm
  • ITRF97 (upd. 3/2000)
  • X4463666.641 m 7.9 mm
  • Y1890982.281 m 8.6 mm
  • Z4131185.980 m 5.0 mm
  • Differences
  • DX -0.049 m DY 0.049 m DZ 0.034 m
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