The AGOS Geospatial equipment, which is available for loan, is suitable for Global Navigation Satellite System (GNSS) related geospatial and geophysical experiments. This Geospatial capability was established to provide the research community with access to state-of-the-art geodetic instruments that support the highest precision measurement of deformation of the solid Earth. The AGOS geospatial infrastructure includes the following infrastructure investments. Specifically, the capability has provided the research community with access to state-of-the-art geodetic instruments that support the highest precision measurement of deformation of the solid Earth. The geospatial component complements the broader AGOS infrastructure platform that is focused on delivering the understanding of the physical state of the accessible crust of the Australian continent, which is crucial to meeting secure, sustainable future energy needs. AuScope AGOS infrastructure is used to enable collection of new baseline data including surface geospatial and subsurface imaging and monitoring data, thereby providing for better long-term management of crustal services, particularly in Australia’s energy-rich sedimentary basins. gPhone observations have been successfully undertaken at Jabiru, Katherine, Tennant Creek, Broome, Karratha and Warakurna (Giles).ĪuScope’s Australian Geophysical Observing System augmented existing NCRIS AuScope infrastructure with new capability that focused particularly on emerging geophysical energy issues. The initial planned build of four remote gravity huts ended up delivering seven gravity observation huts completed late in 2013. This program is designed to provide national gravity data with national network observations at distributed observatories around Australia.
FLEX2D GEODYNAMICS REFERENCE PORTABLE
The upgrades to the gravity building at Mt Stromlo, the purchase of a relative gravimeter for the ANU and the purchase of a portable FG5 absolute gravimeter allowed ANU in collaboration with Geoscience Australia to establish the National Gravity Observation Program. The new absolute and relative gravimeters acquired, permit regular gravity measurements to be made at strategic sites across the country. This included the renovation of the Reynolds Dome and the commissioning of the facility as the new gravity building. The Gravity Program included procuring an FG5 absolute gravimeter, three gPhone Earth tide metres and the establishment of the instrument calibration facility in the Reynolds Dome at Mt Stromlo. The mobile system also allowed for further co-location experiments with VLBI and GNSS sites.
FLEX2D GEODYNAMICS REFERENCE UPGRADE
This power upgrade significantly improved ranging to the GNSS constellations (GPS, Glonass, Beidou and the Galileo System) allowing both optical ranging via SLR and radiometric ranging via GNSS to the same satellites this allows for direct technique inter-comparisons and system calibrations.ĭuring 2007 a French mobile SLR system was used in a pilot study which enabled a continued presence in international altimeter programs at Burnie, Tasmania. The upgrade of components at the Mt Stromlo SLR site, included larger power modules and increased laser pulse fire rates to enhance the ability of the system, by increasing the distance it can range to high-orbit satellites, permitting the GNSS system to be calibrated. Collectively they contribute 25 percent of the global data volume collected from 37 stations. The Yarragadee and Mount Stromlo SLR stations are ranked first and third in the ranking of all SLR stations. This will improve the International Celestial Reference Frame, make regular measurements of Earth Orientation Parameters and develop associated products. The University of Tasmania operates the AuScope VLBI array with all data being provided to the International VLBI Service (IVS) to support the maintenance of the International Terrestrial Reference Frame. System tuning and optimisation is ongoing to improve the quality of data received, with a factor of two improvement in accuracy achieved over previous years. The emphasis has now shifted to operations with the VLBI array observing for more than 150 days each year. The VLBI program completed the construction and implementation of the planned infrastructure in 2011. Indeed the positioning system underpins all science endeavours reliant on accurate spatial positioning. VLBI observations in the Southern Hemisphere are particularly important because they directly support a large variety of Australian science endeavours. It underpins all space based observation, navigation and timing applications, and research in Australia because positioning relies on the VLBI enabled calibration of the global coordinate system. The AuScopeVLBI array comprises three 12 metre radio-telescopes at Mt Pleasant near Hobart, Yarragadee in Western Australia and Katherine in the Northern Territory.
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