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The potential for unifying global‐scale satellite measurements of ground displacements using radio telescopes


Parker, AL and McCallum, L and Featherstone, WE and McCallum, JN and Haas, R, The potential for unifying global‐scale satellite measurements of ground displacements using radio telescopes, Geophysical Research Letters, 46, (21) pp. 11841-11849. ISSN 0094-8276 (2019) [Refereed Article]


Copyright Statement

2019. American Geophysical Union. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

DOI: doi:10.1029/2019GL084915


The expansion of globally consistent satellite‐radar imagery presents new opportunities to measure Earth‐surface displacements on intercontinental scales. Yet global applications, including a complete assessment of the land contribution to relative sea‐level rise, first demand new solutions to unify relative satellite‐radar observations in a geocentric reference frame. The international network of Very Long Baseline Interferometry telescopes provides an existing, yet unexploited, link to unify satellite‐radar measurements on a global scale. Proof‐of‐concept experiments reveal the suitability of these instruments as high‐amplitude reflectors for satellite radar and thus provide direct connections to a globally consistent reference frame. Automated tracking of radar satellites is easily integrated into telescope operations alongside ongoing schedules for geodesy and astrometry. Utilizing existing telescopes in this way completely avoids the need for additional geodetic infrastructure or ground surveys and is ready to implement immediately across the telescope network as a first step toward using satellite radar on a global scale.

Item Details

Item Type:Refereed Article
Keywords:VLBI, SAR, radio telescopes, InSAR geodesy, ground displacements
Research Division:Earth Sciences
Research Group:Geophysics
Research Field:Geodesy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the earth sciences
UTAS Author:McCallum, L (Dr Lucia McCallum)
UTAS Author:McCallum, JN (Dr Jamie McCallum)
ID Code:135924
Year Published:2019
Funding Support:Australian Research Council (DE180100245)
Web of Science® Times Cited:2
Deposited By:Physics
Deposited On:2019-11-21
Last Modified:2022-08-23
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