伽利略导航卫星E1 B伪码跟踪技术研究  

The Study on Galileo Navigation Satellite E1 B Pseudo-code Tracking Technology

作　　者：王千喜[1] 刘岩[1] 杨晓昆[1] 翟羽佳[1] 李秋凤[1] 胡强[1] 

机构地区：[1]中国航天科工信息技术研究院,北京100070

出　　处：《微处理机》2012年第2期19-22,共4页Microprocessors

摘　　要：Galileo系统的BOC信号有更小的跟踪抖动和更好的抗多径性能,BOC信号自相关函数具有的多峰性使跟踪具有很大的难度,跟踪时容易误锁在边峰上。为了解决这个问题,利用Fante提出的自相关函数线性化算法推导了一组参数,仿真结果表明该组参数的归一化鉴别器输出的码片误差在-1到1之间具有线性特征,最后介绍利用此方法参数实现的接收机。Galileo BOC signal system has less tracking jitter and better resistance to multipath performance.The binary offset-carrier（BOC） waveform has a correlation function containing multiple peaks that make tracking signal difficult and a signal tracker can lock onto the wrong peak.A set of parameters are derived to solve this problem by making use of Fante＇s autocorrelation function linear algorithm and Simulation results show that the normalized output of the set of parameters possesses linear characteristics when chip errors are in the-1 to 1.In the end the receiver that is implemented with the parameters is introduced.

关 键 词：二进制偏移载波 伽利略 接收机 滤波器 

分 类 号：TN96[电子电信—信号与信息处理]