摘要
测距码在卫星导航信号体制中占有重要地位。介绍了卫星导航系统中测距码的2种性能分析方法:基于相关峰旁瓣的测距码性能分析方法和基于Welch界的测距码性能分析方法,其中基于Welch界的测距码性能分析方法分别从捕获、跟踪和抗干扰方面分析测距码性能。以这2种方法为基础设计了测距码性能分析软件,利用此软件对现有的各卫星导航系统的测距码进行了性能分析。此研究结果对开展卫星导航信号测距码研究有一定的指导意义。
Ranging codes are of significant importance in the GNSS. This paper introduces two performance analysis methods for the ranging codes of satellite navigation systems： the first method is based on the peaks of autocorrelation and crosscorrelation, and the second method is based on the Welch bound. And with the second method the ranging codes performance is analyzed from acquisition, tracking and anti-jam. A software based on these two methods is given, then the result of analysis of several GNSS ranging codes is given with the help of this software. This study can be used for reference in the related work.
出处
《时间频率学报》
CSCD
2013年第3期173-180,共8页
Journal of Time and Frequency
基金
国家自然科学基金重点资助项目(11073022)
