| B码应用深入探讨 |
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| 引用本文： | 戎强,刘铁强,贾杰峰.B码应用深入探讨[J].全球定位系统,2014,39(4):55-59. |
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| 作者姓名： | 戎强 刘铁强 贾杰峰 |
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| 作者单位： | 中国电子科技集团公司第五十四研究所,河北石家庄050081;河北省卫星导航技术与装备工程技术研究中心,河北石家庄050081 |
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| 摘 要： | 在介绍B码构成与原理的基础上,分析了B码时统典型应用实例,针对B码应用中常见的无法跨年和闰秒、B码中断与恢复时存在时间错误、受扰时间跳变、交流B码幅度与调制比受限等问题,提出了B码版本切换与软件跨年及闰秒、强制守时、解码容错、交流B码数控幅度与调制比等解决方法。工程实践表明：这些方法可有效解决B码应用中遇到的对应问题,有效提高了B码时统的稳定性和可用性,具有很好的实用价值。
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| 关 键 词： | 版本切换 强制守时 解码容错 数控幅度与调制比 |
In-Depth Research on B-Code Application |
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| RONG Qiang,LIU Tieqiang,JIA Jiefeng.In-Depth Research on B-Code Application[J].Gnss World of China,2014,39(4):55-59. |
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| Authors: | RONG Qiang LIU Tieqiang JIA Jiefeng |
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| Institution: | RONG Qiang ,LIU Tieqiang ,JIA Jiefeng(1. The 54th Research Institute of CETC , Shij iazhuang Hebei 050081, China 2. Satellite Navigation Technology and Equipment Engineering Technology Research Center, Shijiazhuang Hebei 050081, China) |
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| Abstract: | Based on the introduction of the B-code structure and principal, this paper an- alyzes the typical application of the B-code. Considering the regular problems during the B- code application, such as unable change the year, time error occurs while B-code recovers from its halted state, time hip being disturbed, AC B-code amplitude and modulation ratio being limited. This paper advanced some settlements, they are B-code version switching and software change the year, force time-holdover, decoding fault-tolerance, and numerical control amplitude and modulation ratio adjustment. Projects application indicates that these set tlements can efficiently solve these problems during B-code application, and can greatly improve the stability and the usability of the B-code system. So it has a good practical value. |
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| Keywords: | Version switching force time-holdover decoding fault-tolerance numerical control amplitude and modulation ratio adjustment |
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