Assessing Quality of CORnet-NSW Infrastructure for Use in Regional New South Wales, Australia

Article

McMahon, S. and Paudyal, D. R.. 2022. "Assessing Quality of CORnet-NSW Infrastructure for Use in Regional New South Wales, Australia." ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences. V-4-2022, pp. 153-161. https://doi.org/10.5194/isprs-annals-V-4-2022-153-2022
Article Title

Assessing Quality of CORnet-NSW Infrastructure for Use in Regional New South Wales, Australia

ERA Journal ID213033
Article CategoryArticle
AuthorsMcMahon, S. (Author) and Paudyal, D. R. (Author)
Journal TitleISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Journal CitationV-4-2022, pp. 153-161
Number of Pages9
Year2022
PublisherCopernicus GmbH
Place of PublicationGermany
ISSN2194-9042
2194-9050
2196-6346
Digital Object Identifier (DOI)https://doi.org/10.5194/isprs-annals-V-4-2022-153-2022
Web Address (URL)https://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/V-4-2022/
Abstract

CORSnet-NSW is a network of Global Navigation Satellite System (GNSS) Continuously Operating Reference Stations (CORS) covering the state of NSW and providing centimetre-level real-time positioning. This research paper aims to determine the level of accuracy and precision of CORSnet-NSW in regional parts of the network and compare them to that of traditional RTK under identical conditions. It investigates what effects satellite geometry and proximity to a CORS station have on NRTK measurements. It also verifies the CORSnet-NSW claim of network wide 2cm accuracy. The claim was found to be true at the 68% Confidence Interval. Changes in satellite geometry were not found to affect the results for the most part. It was also found that CORSnet-NSW
precision was affected by the proximity of the rover to the base/calibration points more than its proximity to a CORSnet-NSW station. However, even though the CORSnet-NSW results were better than expected, traditional RTK remains the most precise and consistent method. This research paper provides GNSS users in regional NSW with the evidence they need to make informed decisions regarding which type of RTK method is fit for their purposes.

KeywordsCORSnet-NSW, Vertical Accuracy, Precision, RTK GNSS, CORS Comparison, Network RTK (NRTK)
ANZSRC Field of Research 2020401305. Satellite-based positioning
Byline AffiliationsSchool of Surveying and Built Environment
Institution of OriginUniversity of Southern Queensland
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