| GPS L1C信号Weil码相关性能分析 |
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| 引用本文： | 何成龙,王垚. GPS L1C信号Weil码相关性能分析[J]. 无线电通信技术, 2013, 39(1): 32-35 |
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| 作者姓名： | 何成龙 王垚 |
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| 作者单位： | 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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| 基金项目： | 国家高技术研究发展计划(“863”计划)项目(2011BAH05B01);国家科技支撑计划项目(2011AA120502) |
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| 摘 要： | 伪码是码分多址信号的基本组成,寻找具有良好相关性能的伪码是基于码分多址的无线通信和无线电导航等信号设计中的重要环节。Weil码是一种基于勒让德序列移位相加形成的伪随机码,具有良好的相关性能,且具有相对灵活的可选序列长度,将在GPS的L1C信号中得到应用。在提出伪码选择方法的基础上,对Weil码的产生方式进行了介绍,并对几种典型的伪码的理论相关性能和序列长度特点进行对比分析,对L1C信号采用的126个Weil码的奇相关和偶相关性能进行仿真,结果表明在10 230的序列长度下Weil码具有良好的相关性能。
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| 关 键 词： | 勒让德序列 Weil码 奇相关 偶相关 |
Weil Code Correlation Performance of GPS L1C Signal |
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| HE Cheng-long , WANG Yao. Weil Code Correlation Performance of GPS L1C Signal[J]. Radio Communications Technology, 2013, 39(1): 32-35 |
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| Authors: | HE Cheng-long WANG Yao |
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| Affiliation: | Yao(Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Centre,Shijiazhuang Hebei 050081,China) |
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| Abstract: | Pseudo-random noise code is a basic composition of code division multiple access(CDMA) signals.It is important for signal design in CDMA-based wireless communication and navigation to find the pseudo-noise code with good correlation performance.Weil code,constructed via a "Shift and Add" procedure from the Legendre sequence,has good correlation properties and selectable sequence length flexible relatively and will be applied to GPS L1C.In this paper,the formation of Weil code is introduced and a comparison of theoretical correlation performance and sequence length characteristics between several typical pseudo codes is analyzed.The simulation on GPS L1Cs 126 Weil codes odd and even correlation properties are provided.The results show that the Weil code has good correlation performance at the sequence length of 10 230. |
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| Keywords: | Legendre sequence Weil code odd correlation even correlation |
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