Multisensor Navigation Systems: A Remedy for GNSS Vulnerabilities?

Grejner-Brzezinska, D, Toth, C, Moore, T, Raquet, J, Miller, M and Kealy, A 2016, 'Multisensor Navigation Systems: A Remedy for GNSS Vulnerabilities?', Proceedings of the IEEE, vol. 104, no. 6, pp. 1339-1353.

Document type: Journal Article
Collection: Journal Articles

Title Multisensor Navigation Systems: A Remedy for GNSS Vulnerabilities?
Author(s) Grejner-Brzezinska, D
Toth, C
Moore, T
Raquet, J
Miller, M
Kealy, A
Year 2016
Journal name Proceedings of the IEEE
Volume number 104
Issue number 6
Start page 1339
End page 1353
Total pages 15
Publisher Institute of Electrical and Electronics Engineers
Abstract Space-based positioning, navigation, and timing (PNT) technologies, such as the global navigation satellite systems (GNSS) provide position, velocity, and timing information to an unlimited number of users around the world. In recent years, PNT information has become increasingly critical to the security, safety, and prosperity of the World's population, and is now widely recognized as an essential element of the global information infrastructure. Due to its vulnerabilities and line-of-sight requirements, GNSS alone is unable to provide PNT with the required levels of integrity, accuracy, continuity, and reliability. A multisensor navigation approach offers an effective augmentation in GNSS-challenged environments that holds a promise of delivering robust and resilient PNT. Traditionally, sensors such as inertial measurement units (IMUs), barometers, magnetometers, odometers, and digital compasses, have been used. However, recent trends have largely focused on image-based, terrain-based and collaborative navigation to recover the user location. This paper offers a review of the technological advances that have taken place in PNT over the last two decades, and discusses various hybridizations of multisensory systems, building upon the fundamental GNSS/IMU integration. The most important conclusion of this study is that in order to meet the challenging goals of delivering continuous, accurate and robust PNT to the ever-growing numbers of users, the hybridization of a suite of different PNT solutions is required.
Subject Navigation and Position Fixing
Keyword(s) Global navigation satellite systems (GNSS)
resilient navigation
Sensor integration
DOI - identifier 10.1109/JPROC.2016.2528538
Copyright notice © 2016 IEEE.
ISSN 0018-9219
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