NDLI: High Dynamic Pseudo-Random Code Tracking Using Unscented Kalman Filter and Carrier-Aiding Technology

Content Provider	IEEE Xplore Digital Library
Author	Xiangyuan Bu Weiping Zeng Yanbo Wu
Copyright Year	2008
Description	Author affiliation: Dept. of Electron. Eng., Beijing Inst. of Technol., Beijing (Xiangyuan Bu; Weiping Zeng; Yanbo Wu)
Abstract	In high dynamic direct-sequence spread-spectrum (DS/SS) systems, due to the impact of Doppler shift on Pseudorandom (PN) code rate, it's very hard to measure PN code delay accurately. In this paper, a new PN code tracking method is proposed to address this issue. Unscented Kalman Filter (UKF) is employed to estimate carrier phase and frequency, and the carrier phase variation is used to aid the code tracking loop to remove most of the incoming dynamics. The loop bandwidth can be significantly narrowed to guarantee the code delay measurement precision and the dynamic tracking performance is improved. Simulations show that the method is feasible.
Starting Page	1
Ending Page	4
File Size	142765
Page Count	4
File Format	PDF
ISBN	9781424421077
DOI	10.1109/WiCom.2008.478
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Doppler shift Tracking loops Phase measurement Working environment noise RF signals Phase estimation Delay estimation Bandwidth Spread spectrum communication Frequency estimation
Content Type	Text
Resource Type	Article

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High Dynamic Pseudo-Random Code Tracking Using Unscented Kalman Filter and Carrier-Aiding Technology