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2024 Katherine Geodetic Observatory: Co-Location Local Tie Survey Technical Report

Created 26/03/2026

Updated 26/03/2026

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The integrity and strength of multi-technique terrestrial reference frames, such as realisations of the International Terrestrial Reference Frame (ITRF), depend on the precisely measured and expressed local-tie connections between space geodetic observing systems at co-located observatories. Australia has several observatories which together host the full variety of space geodetic observation techniques, including Global Navigation Satellites Systems (GNSS), Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR) and Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) beacons.

This report documents the technical aspects of the local tie survey completed at the Katherine Geodetic Observatory, in the Northern Territory in October 2024. The aim of the survey was to precisely measure the local terrestrial connections between the space-based geodetic observing systems co-located at the observatory, which include 2 International GNSS Service (IGS) stations (KAT1 A 59968M001, KAT2 A 59968M002), and VLBI Radio telescope (7375 A 59968S001) infrastructure.

In particular, this report documents the indirect measurement of the VLBI invariant reference point. Geoscience Australia has routinely performed classical terrestrial surveys at Katherine since the installation in 2010. The relationship between points of interest included the millimetre level accurate connections and their associated variance covariance matrix.

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Additional Info

Field Value
Title 2024 Katherine Geodetic Observatory: Co-Location Local Tie Survey Technical Report
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/eee5f67f-9921-40b2-b257-948fc195508b
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 10/03/2026
Geospatial Coverage
Map data © OpenStreetMap contributors
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Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "2024 Katherine Geodetic Observatory: Co-Location Local Tie Survey Technical Report". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/2024-katherine-geodetic-observatory-co-location-local-tie-survey-technical-report