摘要
随着导航系统的需求与发展,提高卫星双向时间比对设备的授时精度非常必要。介绍了卫星双向时间比对技术的基本原理,分析了数字基带设备中影响授时精度的主要误差来源,讨论了减小误差的方法和技术,并给出了数字基带设备的设计方案。实验结果表明,合理选择基带设备中应用到的设计参数,能够提高卫星双向时间比对法得授时精度。
With the requirement and development of navigation system, it is necessary to improve the timing accuracy for two- way satellite time transfer devices. This paper introduces the theory of two- way satellite time transfer technology ,analyzes the timing error source in the base-band design,discusses the method and technology of reducing the timing error in digital signal process, and finially presents the design project of the base - band. Experiment result shows that choosing right parameters can improve the timing accuracy.
出处
《电讯技术》
北大核心
2009年第10期83-87,共5页
Telecommunication Engineering
关键词
卫星导航系统
双向时间比对
窄相关技术
授时精度
数字基带设计
satellite navigation system
two - way time transfer
narrow correlator technology
timing error
digital base - band design
