| GALILEO/GPS中频接收的同步性能研究 |
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| 引用本文： | 朱亚峰,田增山,周永胜. GALILEO/GPS中频接收的同步性能研究[J]. 重庆邮电大学学报(自然科学版), 2008, 20(1): 53-57 |
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| 作者姓名： | 朱亚峰 田增山 周永胜 |
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| 作者单位： | 重庆邮电大学,光电工程学院,重庆,400065;重庆邮电大学,无线定位与空间测量研究所,重庆,400065 |
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| 基金项目： | 重庆市科委自然科学基金 |
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| 摘 要： | 本文针对GALILEO/GPS中频接收机同步跟踪性能问题进行研究。主要进行GPS扩频信号和GALILEO BOC(m,n)信号的自相关函数峰值的比较，GPS/GALILEO接收机码跟踪、载波跟踪的速率精度的比较，其中码跟踪采取了延迟锁相环(DLL)，载波跟踪采用costas锁相环。从仿真的结果可以看出，扩频码自相关函数具有单峰值，而BOS(m,n)信号自相关函数具有多峰值的特点，GALILEO接收机具有锁相速度快、精度高的特点。
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| 关 键 词： | GALILEO接收机 载波同步 延迟锁相环 码同步 |
| 文章编号： | 1673-825X（2008）01-0053-05 |
| 收稿时间： | 2007-04-21 |
| 修稿时间： | 2007-06-09 |
Study on performance of IF GALILEO/GPS receivers synchronization |
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| ZHU Ya-feng,TIAN Zeng-shan,ZHOU Yong-sheng. Study on performance of IF GALILEO/GPS receivers synchronization[J]. Journal of Chongqing University of Posts and Telecommunications, 2008, 20(1): 53-57 |
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| Authors: | ZHU Ya-feng TIAN Zeng-shan ZHOU Yong-sheng |
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| Affiliation: | College of Electronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065,P.R. China |
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| Abstract: | The feature of IF GALILEO/GPS receivers synchronization tracking is studied. The GPS spread code's auto-correlation function peak with that of GALILEO BOC(m,n) are compared, and the speed precision of GALILEO/GPS receiver code tracking and carrier tracking are compared as well. Delay locked loop (DLL) is used in code tracking and Costas PLL is used in carrier tracking. Simulation result shows that the auto-correlation function of spread code has a single peak, the auto correlation function of BOS(m,n) has multi peak, and GALILEO receiver has a high accuracy. |
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| Keywords: | GALILEO receiver carrier synchronization delay locked loop (DLL) code synchronization |
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