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2023 Mount Pleasant Geodetic Observatory (Hobart) Co-Location Local Tie Survey Technical Report

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Created 14/01/2025

Updated 14/01/2025

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The integrity and strengths of multi-technique terrestrial reference frames such as ITRF2020 depend on the precisely measured and expressed local tie connections between space geodetic observing systems at co-located observatories. A local tie survey was conducted at the Mount Pleasant Geodetic observatory, in Hobart in March 2023. 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 includes a permanent International GNSS Service (IGS) site (HOB2 A 50116M004), and Very Long Baseline Interferometry (VLBI) radio telescopes. In particular, this report documents the indirect measurement of the VLBI invariant reference point for both the 12m (7374 A 50116S007) and 26m (7242 A 50116S002) radio telescopes at the site. Geoscience Australia has routinely performed classical terrestrial surveys at Mount Pleasant since 1995. A high precision survey was conducted between the survey pillars surrounding the observatory. These survey pillars were monitored to ensure their stability as part of a consistent, stable terrestrial network from which local tie connections were made to the VLBI and GNSS systems. The relationship between points of interest included the millimetre level accurate connections and their associated variance covariance matrix.

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Title 2023 Mount Pleasant Geodetic Observatory (Hobart) Co-Location Local Tie Survey Technical Report
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/8128fd9f-353d-46e3-b92a-91c8c624c345
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 13/12/2023
Geospatial Coverage {"type": "Polygon", "coordinates": [[[147.0, -43.0], [147.5, -43.0], [147.5, -42.5], [147.0, -42.5], [147.0, -43.0]]]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "2023 Mount Pleasant Geodetic Observatory (Hobart) Co-Location Local Tie Survey Technical Report". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/2023-mount-pleasant-geodetic-observatory-hobart-co-location-local-tie-survey-technical-report

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