PT  - JOURNAL ARTICLE
AU  - Wen, Jian
AU  - Li,, Hong
AU  - Lu, Mingquan
TI  - A Flexible GNSS Spoofer Localization System: Spoofing Discrimination and Localization Method
AID  - 10.33012/navi.511
DP  - 2022 Mar 20
TA  - NAVIGATION: Journal of the Institute of Navigation
PG  - navi.511
VI  - 69
IP  - 1
4099  - https://navi.ion.org/content/69/1/navi.511.short
4100  - https://navi.ion.org/content/69/1/navi.511.full
SO  - NAVIGATION2022 Mar 20; 69
AB  - Global navigation satellite systems (GNSS) are vulnerable to spoofing attacks. To shut down a spoofer, it is necessary to locate the spoofer first. Many spoofer localization systems use long cables for the synchronization of multiple receivers. However, a flexible spoofer localization system free from cables is sometimes essential so the receivers can move freely and are flexible to deploy. This paper solves two major problems in developing such a system: spoofing discrimination without requiring synchronization and having an effective method using asynchronous raw measurements with no other assistance. First, this paper proposes to use the extended pseudorange double-difference method to discriminate spoofing signals. The performance is then analyzed and the effectiveness is verified. Then, a quasi-synchronization spoofer localization method (QSSL) is proposed, and it is verified that its localization performance can attain the Cramer-Rao lower bound. Above all, a field experiment demonstrates the effectiveness of the proposed methods and the feasibility of such system.