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An IMU-based MUSIC algorithm for GPS receivers under jamming attack

Title
An IMU-based MUSIC algorithm for GPS receivers under jamming attack
Translated Title
MUSIC 알고리즘을 사용한 GPS 수신기에서의 재밍 영향
Authors
Lee, Inhwan
Advisor(s)
Choi, Ji Hwan
Co-Advisor(s)
Kim, Jong Hyun
Issue Date
2018
Available Date
2018-03-14
Degree Date
2018. 2
Type
Thesis
Keywords
GPSnavigationMUSIC algorithmDOA estimationUAVIMUDOA 추정무인기관성 센서
Abstract
UAV navigation system using Global Positioning System (GPS) is very vulnerable due to malicious at-tacks such as jamming and spoofing. The GPS receiver receives the electromagnetic waves from more than 24 satellites outside the atmosphere and determines its position. However, since GPS signals are received from satellites 20,000 kilometers away, the power of the signal is very weak. One of the most effective way to eliminate malicious interference signals is to use an array antenna in GPS receiver. Capon and Multiple Signal Classification (MUSIC) algorithms are commonly used to estimate the direction of the incident signal, i.e., direction of arrival (DOA) estimation algorithm. The MUSIC algo-rithm is superior to the DOA estimation, but resolution between the desired signal and adjacent signals is low and the computational complexity is high. Therefore, in this paper, we can localize the candidate angle of the MUSIC algorithm by using the angular velocity and acceleration measurement of the inertial measurement unit (IMU), and accurately estimate the DOA and reduce the complexity. ⓒ 2017 DGIST
Table Of Contents
I. Introduction 1-- 1.1 Motivation 1-- 1.2 Objective of the thesis 2-- II. Background 4-- 2.1 Global positioning system 4 2.2 Array antenna 5 2.2.1 Uniform linear array antenna (ULA) 5 2.2.2 Uniform circular array antenna (UCA) 5 2.3 MUSIC algorithm 7 III. Problem of MUSIC 10 3.1 Limitation of MUSIC 10 3.2 Complexity of MUSIC 10 3.3 Vulnerability to Jamming11 IV. Solution and Result 15 V. Conclusion 19 References 20
URI
http://dgist.dcollection.net/common/orgView/200000003704
http://hdl.handle.net/20.500.11750/6020
DOI
10.22677/thesis.200000003704
Degree
Master
Department
Information and Communication Engineering
University
DGIST
Related Researcher
  • Author Choi, Jihwan P. NC(Networks and Communications) Research Group
  • Research Interests Wireless and space communication systems; Cross-layer network design; 위성 통신 네트워크
Files:
Collection:
Department of Information and Communication EngineeringThesesMaster


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