期刊名称：International Journal of Signal Processing, Image Processing and Pattern Recognition
印刷版ISSN：2005-4254
出版年度：2015
卷号：8
期号：9
页码：289-298
DOI：10.14257/ijsip.2015.8.9.31
出版社：SERSC
摘要：The long PN code in a Binary Offset Carrier (BOC) modulated signal has a higherrate than the GPS C/A code, which makes the acquisition process in the new globalnavigation satellite system (GNSS) much more complex. To achieve a fast acquisition ofthe GNSS signal with a reduced number of correlators and low computational complexity,a two-stage deterministic compressed (DS) GNSS acquisition technique has beenproposed. Nevertheless, the ambiguous threat of BOC signal isn’t taken into account inthe DS technique. To eliminate the ambiguity threat in the acquisition process of BOC (m,n) signal, an unambiguous deterministic compressed acquisition is proposed in thispaper. The main idea of the proposed technique is to introduce a simplified GRASSalgorithm in the second stage measurement. Theoretical analysis and simulation resultsshow that, at the expense of some performance degradation the proposed technique cancompletely remove the undesired positive side peaks of BOC (m, n) signal, and reduce thechance of false peak acquisition compared with the DS technique.
关键词：Binary offset carrier (BOC); global navigation satellite system (GNSS);unambiguous acquisition; deterministic compressed
