| 一种新的BOC调制无模糊跟踪鉴别器设计 |
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| 引用本文： | 唐斌,郭盛桃,刘富.一种新的BOC调制无模糊跟踪鉴别器设计[J].全球定位系统,2010,35(5):16-20. |
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| 作者姓名： | 唐斌 郭盛桃 刘富 |
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| 作者单位： | 61081部队,北京100094 |
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| 摘 要： | 建立了导航接收机码跟踪延迟锁定环的数学模型，讨论了DP和EMLP鉴别器在不同信号、不同前端滤波器带宽的鉴别曲线特性，阐述了BOC调制模糊跟踪产生的原因。针对BOC调制信号的模糊跟踪问题，从BOC调制的机理出发，将BOC调制分成伪码和副栽波两部分分析，阐述了一种新的鉴别器设计。实验表明：新鉴别器设计，鉴别曲线线性跟踪区域斜率最高为9，可实现BOC调制的无模糊跟踪。
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| 关 键 词： | BOC调制 无模糊跟踪 延迟锁定环 鉴别器设计 |
A new DLL Discriminator Design of Unambiguous Tracking for BOC Signal |
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| TANG Bin,GUO Shen-tao,LIU Fu.A new DLL Discriminator Design of Unambiguous Tracking for BOC Signal[J].Gnss World of China,2010,35(5):16-20. |
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| Authors: | TANG Bin GUO Shen-tao LIU Fu |
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| Institution: | (Unit 61081, Beijing 100094, China) |
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| Abstract: | The mathematical model of delay lock loop of code tracking is built. The error with different navigation signal and front-end filter bandwidth is simulated. Beeause of the multimodality of its autocorrelation funetion, it makes tracking more challenging. Based on the principle of the binary offset carrier（BOC） modulation, the BOC modulation is analyzed from PRN code and square wave sub-carrier, and a new DLL discriminator design of unam- biguous tracking for BOC signal is put forward. The simulation results show that the given design has no energy loss and less computation complexity, and may track BOC signal unam- biguously. |
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| Keywords: | BOC modulation unambiguous tracking DLL discriminator design |
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