Home // SPACOMM 2018, The Tenth International Conference on Advances in Satellite and Space Communications // View article

GPS AOA Estimation Technique Based on a Null Despreader

Authors:
Suk-seung Hwang

Keywords: Global Positioning System; Angle-of-Arrival; null despreader; Multiple Signal Classification; beamforming

Abstract:
The Global Positioning System (GPS), which has various military and civilian applications, is designed to estimate the locations of objects including the user. In order to enhance the desired GPS signal and to efficiently suppress the interference signals, the Angle of Arrival (AOA) information for the GPS signal is required on the environment of high-power interferers. After despreading based on a conventional despreader, the GPS AOA can be estimated using the conventional AOA estimation algorithm such as Multiple Signal Classification (MUSIC). However, we must select the GPS AOA from all estimated AOAs, because the result of MUSIC includes AOAs of GPS and interference signals. In order to overcome this problem, in this paper, we propose the GPS AOA estimation algorithm based on a null despreader. In this technique, we compare the estimated AOAs based on the conventional despreader and based on the null despreader. The proposed technique efficiently estimates and selects the desired GPS AOA when existing high-power interference signals. We demonstrate the performance of the proposed technique via a representative computer simulation example.

Pages: 43 to 47

Copyright: Copyright (c) IARIA, 2018

Publication date: April 22, 2018

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-624-8

Location: Athens, Greece

Dates: from April 22, 2018 to April 26, 2018