Correlation Combination Ambiguity Removing Technology for Acquisition of Sine-Phased BOC（kn,n） Signals

Binary Offset Carrier （BOC） has been chosen as one of modulation methods in the future Global Navigation Satellite Systems （GNSS）. Even though BOC signals can bring several advantages such as better track performance and higher positioning accuracy, there is a drawback that the autocorrelation funct...

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Bibliographic Details
Published in:中国通信：英文版 2015 (4), p.86-96
Main Author: LIU Wen XI Yue DENG Zhongliang JIAO Jichao YIN Lu
Format: Article
Language:English
Subjects:
BOC调制
信号
全球导航卫星系统
技术
正弦
歧义
相控
自相关函数
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Summary:Binary Offset Carrier （BOC） has been chosen as one of modulation methods in the future Global Navigation Satellite Systems （GNSS）. Even though BOC signals can bring several advantages such as better track performance and higher positioning accuracy, there is a drawback that the autocorrelation functions have multiple side-peaks if BOC modulation is adopted. This characteristic will lead to false acquisition and the tracking loop will be locked in false phase point. The proposed Correlation Combination Ambiguity Removing Technology （CCART） cancelled all the side-peaks of the sine-phased BOC（kn,n） signals completely by making use of two kinds of correlation functions. Two kinds of sub-correlation functions were combined separately and then final correlation function without side-peaks was acquired. The simulation results are given and compared with other techniques. It is shown that acquisition will not be degraded with the increase ofk.
ISSN:1673-5447