Performance Analysis of Joint Multi-Antenna Spoofing Detection and Attitude Estimation

Abstract

The paper presents the results of field tests of a technique for detection of spoofing signals using the direction-of-arrival (DOA) measurements obtained by processing signals of an adaptive antenna array. The detection of spoofing signals is achieved by comparing and statistical testing of the measured DOAs against the DOAs predicted with the ephemeris data. Because the attitude of the antenna array is assumed to be unknown and has to be estimated, the detection of spoofing signals is treated as a joint detection/estimation problem. For performing the field tests, a simple version of spoofing, so called meaconing, has been realized using a repeater of the in-air GNSS signals. The performance of the proposed technique has been investigated for both static and dynamic user cases.