摘要
"北斗"卫星导航系统(Beidou Satellite Navigation System,BDS)中码跟踪误差是影响测距精度的重要因素之一。本文主要分析信道对码跟踪精度的影响:研究了通过改善信道编码方案提升信号载噪比,降低码跟踪误差;以码相关参考波形技术为例,研究了不同信道带宽条件下闸波宽度对码跟踪精度的影响,采用了公式推导和编程仿真的方法验证了以上观点。为进一步在信道方面提升码跟踪精度的研究提供了依据。
The code tracking error of Beidou Satellite Navigation System(BDS) is one of the important factors affecting the distance measurement accuracy. In this paper, the effect of channel on code tracking accuracy is analyzed. Taking the code correlation reference waveform technology as an example, the effect of gate width on the code tracking accuracy under different channel bandwidth is studied. The method of formula derivation and programming simulation is used to verify the above views. It provides a basis for further research on improving code tracking accuracy in channel.
作者
熊兴雨
XIONG Xing-yu(Department of electronic and optical engineering of the University of Space Engineering,Beijing 101400,China)
出处
《软件》
2018年第12期87-89,共3页
Software
关键词
BDS
码跟踪精度
信道编码
载噪比
信道带宽
闸波宽度
BDS
Code tracking accuracy
Channel coding
Carrier to noise ratio
Channel bandwidth
Brake width
