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Automatic Estimation of Moving Targets By MUSIC Algorithm Considering Doppler Effect

Authors:
Xin Wang
Heung-Gyoon Ryu

Keywords: MUSIC; AOA; Bandpass sampling; OFDM; Doppler effect

Abstract:
For the multiple users communication or multiple target detection, it is important to separate multiple targets or users that are included in the same communication or radar antenna beam. In this paper, a combined OFDM (orthogonal frequency division multiplexing) system and bandpass sampling method using MUSIC (multiple signal classification) algorithm for automatic AOA (angle of arrival) tracking is discussed. Also, we propose a new method of the time division multiplexing with bandpass sampling at the same time to avoid the interference due to the imperfect RF (radio frequency) filter characteristics. The main purpose of our proposed structure is to avoid the interference generated from the multi-band signals processing. Next, we consider the Doppler effect caused by the target movement in mobile environment. After compensating the Doppler effect with valid range, the system performance is improved. Computer simulation results show the performances of MUSIC spectrum for AOA in various conditions and demonstrate the accuracy of AOA estimations.

Pages: 12 to 17

Copyright: Copyright (c) IARIA, 2013

Publication date: July 21, 2013

Published in: conference

ISSN: 2327-2058

ISBN: 978-1-61208-288-2

Location: Nice, France

Dates: from July 21, 2013 to July 26, 2013