| 一种BOC(n, n)信号的新型精确同步方法 |
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| 引用本文： | 陈翔,齐家敏,陈佳品. 一种BOC(n, n)信号的新型精确同步方法[J]. 科学技术与工程, 2012, 12(6): 1268-1271,1280 |
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| 作者姓名： | 陈翔 齐家敏 陈佳品 |
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| 作者单位： | 上海交通大学微纳科学技术研究院,薄膜与微细技术教育部重点实验室,微米纳米加工技术国家级重点实验室,上海200240 |
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| 基金项目： | 国家自然科学基金项目（面上项目,重点项目,重大项目）（61175100） |
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| 摘 要： | BOC（Binary Offset Carrier,二进制偏移载波）信号现已广泛用于各全球卫星定位系统中。但BOC信号的自相关函数具有多峰,在同步时有捕获困难和歧异跟踪的问题。对此,由BOC(1, 1)自相关函数结构入手分析,进而提出了一种适用于BOC(n, n)的新型同步算法。其在保持相关函数主峰的同时完全移除了副峰,从而使同步变得简单准确。仿真结果表明,提出的跟踪环路能实现精确同步,并且多径性能优良,检测概率只略有下降。
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| 关 键 词： | 二进制偏移载波 同步 跟踪 歧异性 |
| 收稿时间： | 2011-12-13 |
| 修稿时间： | 2011-12-16 |
An Novel Unambiguous Synchronization Scheme for BOC(n, n) Signals |
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| Chen Xiang,and. An Novel Unambiguous Synchronization Scheme for BOC(n, n) Signals[J]. Science Technology and Engineering, 2012, 12(6): 1268-1271,1280 |
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| Authors: | Chen Xiang and |
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| Affiliation: | (Key laboratory for Thin Film and Microfabrication of Ministry of Education,Research Institute of Micro/Nano Science and Technology,SJTU,Shanghai 200240,P.R.China) |
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| Abstract: | The Binary Offset Carrier (BOC) has been used in many Global Navigation Satellite Systems. But it makes acquisition more challenging and tracking potentially ambiguous in synchronization because of its multiple peak autocorrelation function. This paper first analyses the structure of autocorrelation function of BOC(1, 1) , then develop a novel synchronization technique dedicated to BOC(n, n) signals. It can completely removes the side-peak which hinder the accurate synchronization of any BOC(n, n) signal while keeping the same sharp correlation main peak. Simulation results show that the proposed tracking loops can make acquisition and tracking accurate. It also offers a good resistance to long-delay multipath and slightly degrades its probability of detection. |
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| Keywords: | Binary Offset Carrier (BOC) Synchronization Tracking Ambiguity |
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