NDLI: One-dimensional traversal receiver autonomous integrity monitoring method based on maximum likelihood estimation for GNSS anti-spoofing applications

Content Provider	IET Digital Library
Author	Li, Jianfeng Li, Hong Lu, Mingquan
Abstract	By forging global navigation satellite system (GNSS) signals similar to authentic ones, a spoofer can make receivers track forged signals (spoofing signals) and generate wrong position, velocity and time results. Receiver autonomous integrity monitoring (RAIM) can be extended to the field of spoofing detection and exclusion (SDE). However, it is well known that when there are six or more signals and only one spoofing signal among them, RAIM can effectively exclude the spoofing signal. In this study, based on maximum likelihood estimation (MLE) theory and the idea of the traverse, one-dimensional traversal MLE-RAIM (TMRAIM) is proposed, which can exclude multiple spoofing signals. Theoretically, the influence of spoofing biases will be reflected in pseudorange residuals, and then affect the probability distribution of the parity vector. Through MLE deduction, the authors can find corresponding spoofing signals which are relevant with the maximum probability of the parity vector only once under the supposed number of spoofing signals. By just traversing the number of spoofing signals, TMRAIM can run effectively on real-time GNSS receivers with low complexity. The SDE ability and time complexity are analysed in detail and two field experiments are constructed. Experimental results demonstrate the method is feasible and effective for anti-spoofing applications.
Starting Page	1888
Ending Page	1896
Page Count	9
ISSN	17518784
Volume Number	14
e-ISSN	17518792
Issue Number	Issue 12, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/14/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2020.0186
Journal	IET Radar, Sonar & Navigation
Publisher Date	2020-08-19
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Forged Signal Tracking Global Navigation Satellite System Signal GNSS Antispoofing Application Maximum Likelihood Estimation Maximum Likelihood Estimation Theory MLE Theory Multiple Spoofing Signal One-dimensional Traversal Receiver Autonomous Integrity Monitoring Method Probability Distribution Pseudorange Residuals Radio Navigation And Direction Finding Radio Receiver Real-time GNSS Receiver Satellite Navigation Spoofing Biases Spoofing Detection And Exclusion Statistical Distribution Statistics Traverse One-dimensional Traversal MLE-RAIM
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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