| AItBOC信号码跟踪性能研究 |
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| 引用本文： | 张军,雍玲,庞晶,黄仰博.AItBOC信号码跟踪性能研究[J].全球定位系统,2012,37(5):18-23. |
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| 作者姓名： | 张军 雍玲 庞晶 黄仰博 |
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| 作者单位： | 国防科学技术大学电子科学与工程学院卫星导航研发中心,湖南长沙,410073 |
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| 摘 要： | 通过分析A1tBOC（15，10）信号的功率谱密度、自相关函数，得出该信号在码跟踪性能上的理论优势，并根据Betz码跟踪评估理论仿真分析了接收机前端带宽、相关器间隔、环路鉴别器类型、载噪比以及全频带和单边带两种接收方式对该信号码跟踪精度的影响，并且通过与BPSK（10）、BOC（15，10）和单边带AltBoc（15，10）信号对比，得出AltBOC（15，10）信号在码跟踪精度上的优势，为AltBOC接收机设计提供理论依据。
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| 关 键 词： | AltBOC 码跟踪 接收机前端带宽 相关器间隔 环路鉴别器 载噪比 |
Research Performance of AltBOC Signal Code Tracking |
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| ZHANG Jun,YONG Ling,PANG Jing,HUANG Yangbo.Research Performance of AltBOC Signal Code Tracking[J].Gnss World of China,2012,37(5):18-23. |
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| Authors: | ZHANG Jun YONG Ling PANG Jing HUANG Yangbo |
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| Institution: | (National University of Defense Technology, Changsha Hunan 410073, China) |
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| Abstract: | AltBOC （Alternate Binary Offset Carrier） is the new and promising GNSS signal modulation mode, which improves the code tracking accuracy, mitigates the multipath and has the high bandwidth efficiency. AltBOC（15,10） signal power spectral density and au tocorrelation function to draw it in the code tracking performance are analyzed , and the re ceiver frontend bandwidth, correlator interval, loop discriminator type, two different re ceiving modes of the whole hand and singlesideband and carrier to noise ratio on the code tracking accuracy are discussed, then compared with other signals （BPSK （10）, BOC （15,10） and signalsideband AltBOC（15,10）） by simulation. At last that AltBOC signal have advan tage in the code tracking and some useful conclusion for AltBOC receiver is presented. |
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| Keywords: | AltBOC code tracking front-end bandwidth correlator interval DLL CNR |
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