Updated: 22 November 2005

Satellite Laser Ranging (SLR) Analysis

SLR Coordinate Time Series

Time series graph describing geocentre motion at weekly intervals obtained
by translation parameters between successive terrestrial reference frames
and ITRF2000. Red dots represent the actual time series and
the yellow represent their seasonal trends [gif_26k]

The Satellite Laser Ranging (SLR) coordinate time series are derived using SLR observations from the global SLR network. The SLR coordinate time series are computed using the Lageos 1 and Lageos 2 satellite data sets from 1993 to the present, and are aligned to the International Terrestrial Reference Frame 2000 (ITRF2000).

Download the latest SLR time series (1993 to present):-

Geocentre and Scale Variations

Time series describing the geocentre motion and scale variations are respectively derived by translation and scaling between successive Terrestrial Reference Frames (TRFs) and the ITRF2000. The successive TRFs are obtained at weekly intervals using observations from the global SLR network.

Time series graph describing scale variations at weekly intervals obtained
by scaling between successive terrestrial reference frames and ITRF2000.
Red dots represent the actual time series and
the yellow represent the seasonal trend [gif_14k]

The two graphics show the latest time series from 1993 to the present.

Links to other SLR pages at Geoscience Australia

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For more information contact: geodesy@ga.gov.au