| 导航信号的BOC调制方式 |
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| 引用本文： | 胡修林,周艳玲,唐祖平. 导航信号的BOC调制方式[J]. 无线电工程, 2007, 37(3): 31-33 |
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| 作者姓名： | 胡修林 周艳玲 唐祖平 |
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| 作者单位： | 华中科技大学,湖北,武汉,430074 |
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| 摘 要： | BOC调制方式适应导航发展的新需要,它实现了频谱分裂以充分利用现有频段资源,且具有比传统BPSK调制方式更好的相关性能,从而可以提高根据相关特性测距的精度。介绍了BOC调制信号的频谱、功率谱和相关函数的特点。针对BOC调制信号相关函数的多峰结构容易造成捕获模糊,提出了3种相应的接收处理方法:类似BPSK的单边带处理方法、峰跳法和一种无模糊跟踪鉴相器算法。
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| 关 键 词： | BOC调制 卫星导航 相关函数 捕获 |
| 文章编号： | 1003-3106（2007）03-0031-03 |
| 修稿时间： | 2006-06-21 |
The BOC Modulation of Navigation Signal |
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| HU Xiu-lin,ZHOU Yan-ling,TANG Zu-ping. The BOC Modulation of Navigation Signal[J]. Radio Engineering of China, 2007, 37(3): 31-33 |
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| Authors: | HU Xiu-lin ZHOU Yan-ling TANG Zu-ping |
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| Affiliation: | Huazhong University of Science and Technology, Wuhan Hubei 430074, China |
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| Abstract: | The BOC modulation accommodates to the new development of satellite navigation,which realizes the split of spectrum to make full use of the available frequency bands,and possesses better autocorrelation property than the classic BPSK modulation,so can improve the precision of the preudorange.This paper introduces the spectrum,power spectrum and the autocorrelation of BOC modulation; then presents three kinds of techniques to eliminate the ambiguity of the multi-peak of autocorrelation function to achieve BOC acquisition,which are BPSK like method,bump-jump method and one algorithm of unambiguous tracker for BOC signals. |
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| Keywords: | BOC modulation satellite navigation autocorrelation function acquisition |
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