Identification of Authentic GNSS Signals in Time-Differenced Carrier Phase Measurements with a Multi-Constellation Software Defined Radio Receiver

Zhen Zhu, Sanjeev Gunawardena, Eric Vinande, Jason Pontious

Abstract: Abstract—Time-differenced carrier phase can be computed with measurements and navigation data recorded by a multi-GNSS SDR receiver such as PyChips, from which user displacement and receiver clock drift can be solved. A random sample consensus algorithm has been developed to check consistency among measurements and data. This algorithm can successfully identify inauthentic measurements from a multifrequency GNSS dataset, even if inauthentic satellite orbital/clock data are used. Keywords—inauthentic GNSS, SDR, RANSAC
Published in: 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS)
April 24 - 27, 2023
Hyatt Regency Hotel
Monterey, CA
Pages: 1027 - 1032
Cite this article: Zhu, Zhen, Gunawardena, Sanjeev, Vinande, Eric, Pontious, Jason, "Identification of Authentic GNSS Signals in Time-Differenced Carrier Phase Measurements with a Multi-Constellation Software Defined Radio Receiver," 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS), Monterey, CA, April 2023, pp. 1027-1032. https://doi.org/10.1109/PLANS53410.2023.10139922
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