Simple GNSS Spoofing Detection in Two Antennas' or Multi Receiver Maritime Systems

摘要

The paper presents an overview of methods for detecting the spoofing of GNSS open service code signals illustrated with the example of C/A GPS signals. GNSS signal spoofing is an attack method where a signal is transmitted that appears authentic but it induces the receiver under attack to compute an erroneous navigation solution, time, or both. Usage of commercially available satellite compasses and two antennas systems for the detection of such threat is described in detail. It opens possibility of implementation into receiver autonomous integrity monitoring algorithms (RAIM) in systems consisting of several GNSS sensors. The paper is expanded version of author's publication "Real-time GNSS Spoofing Detection in Maritime Code Receivers" in "Explo-Ship 2014" conference proceedings (Poland, Szczecin, 12-15.04.2014).