| 锁频环辅助下锁相环的跟踪误差分析 |
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| 引用本文： | 王俊,李加琪,吴嗣亮.锁频环辅助下锁相环的跟踪误差分析[J].北京理工大学学报,2011,31(7):838-843. |
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| 作者姓名： | 王俊 李加琪 吴嗣亮 |
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| 作者单位： | 1. 北京理工大学信息与电子学院,北京 100081;北京交通大学电子信息工程学院,北京 100044
2. 北京理工大学信息与电子学院,北京,100081 |
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| 摘 要： | 为适应高动态环境,卫星导航接收机采取锁频环辅助锁相环的技术进行载波跟踪.锁相环在锁频环跟踪频率基础上锁定载波相位.现基于经典的二阶锁频环辅助三阶锁相环结构,研究其中的载波相位跟踪误差,包括动态应力误差与热噪声跟踪误差.通过推导,得到了2个误差的计算公式.仿真结果表明,有关载波相位跟踪误差的分析是准确的,有助于之后的载波跟踪环路设计.
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| 关 键 词： | 锁频环辅助锁相环 动态应力误差 热噪声跟踪误差 |
| 收稿时间： | 2010/9/26 0:00:00 |
Tracking Error Analysis of FLL-Assisted-PLL |
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| WANG Jun,LI Jia-qi and WU Si-liang.Tracking Error Analysis of FLL-Assisted-PLL[J].Journal of Beijing Institute of Technology(Natural Science Edition),2011,31(7):838-843. |
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| Authors: | WANG Jun LI Jia-qi and WU Si-liang |
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| Institution: | School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China;School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China;School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China;School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | To adapt the high dynamic environment, satellite navigation receivers often adopt frequency-locked loop (FLL) to assist the phase-locked loop (PLL) for carrier tracking. Based on the classic third order PLL assisted by second order FLL, the carrier phase tracking error is investigated, which is composed of dynamic stress error and thermal noise tracking error. The formulae for calculating above two errors are derived. Simulation results show that the analysis of carrier phase tracking error is correct and accurate, and it is helpful to design the carrier tracking loop feather. |
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| Keywords: | FLL-assisted PLL dynamic stress error thermal noise tracking error |
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