文章基本信息

标题：A new algorithm of energy suppression for satellite navigation
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作者：Yuanfa Ji ; Xiyan Sun
期刊名称：Geo-spatial Information Science
印刷版ISSN：1009-5020
电子版ISSN：1993-5153
出版年度：2010
卷号：13
期号：1
页码：65-69
DOI：10.1007/s11806-010-0199-8
出版社：Taylor and Francis Ltd
摘要：The satellite navigation anti-interference technique, especially space anti-interference technique, is subjected to many restrictions, such as cost, energy depletion, and so on, and the satellite signal strength is limited by the International Radio Advisory Committee, the International Telecommunication Union (ITU) and satellite companies. This paper focuses on satellite navigation systems, especially satellite navigation systems adopting direct sequence spread spectrum (DSSS). The notch filter is used to remove some frequencies from the pseudorandom code frequency spectrum making use of its cyclostationarity first, then the filtered pseudorandom code is modulated by the carrier to attain energy suppression, but the pseudorandom code autocorrelation characteristic stays unchanged. The feasibility of this algorithm is verified by simulation results.
关键词：satellite navigation; CA code; anti- interference; notch filter; cyclostationarity; parasitizing