| 同阶二元偏移载波调制信号跟踪技术 |
| |
| 引用本文： | 邢兆栋.同阶二元偏移载波调制信号跟踪技术[J].无线电工程,2014(5):40-43,51. |
| |
| 作者姓名： | 邢兆栋 |
| |
| 作者单位： | 河北省卫星导航技术与装备工程技术研究中心,河北石家庄050081 |
| |
| 基金项目： | “十二五”国家科技支撑资助项目（2011BAH24B04） |
| |
| 摘 要： | 针对同阶二元偏移载波调制卫星导航信号,提出一种高效新算法解决信号跟踪中的模糊性。分析了同阶二元偏移载波调制原理、信号跟踪模糊性及解决方法,利用本地扩频码与接收信号的相关函数特点,构建了码跟踪环路鉴相曲线,选择了合适的相关间距作为符号判决,联合构成鉴相器,推导了算法设计的正确性,给出了实现架构。仿真结果表明,码相位捕获误差±0.9个码片内均可正确跟踪。该方法可进一步应用于全球卫星导航系统新体制信号的接收处理。
|
| 关 键 词： | 全球卫星导航定位系统 二元偏移载波调制 码跟踪环路 鉴相器 |
A New Tracking Method for Same Order Binary Offset Carrier Modulation Signal |
| |
| XING Zhao-dong.A New Tracking Method for Same Order Binary Offset Carrier Modulation Signal[J].Radio Engineering of China,2014(5):40-43,51. |
| |
| Authors: | XING Zhao-dong |
| |
| Affiliation: | XING Zhao-dong (Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center, Shijiazhuang Hebei 050081, China) |
| |
| Abstract: | A new effective unambiguous tracking method is designed for resolving the problem caused by multi-correlation peaks in same order Binary Offset Carrier （BOC） satellite navigation signals.The principle of the same order BOC signal modulation,signal tracking ambiguity and solution are analyzed. A new type curve of discriminator for code tracking loop is constructed with correlation between spread code and received BOC signal.The code chip correlation space is selected and used as sign judgment,and the code discriminator is formed.The arithmetic is deduced and realization construction is shown.The simulation results show that the signals can be tracked correctly with code phase acquisition error in ±0.9 chip.The method can be applied to new system signals receiving process in global navigation satellite system. |
| |
| Keywords: | global navigation satellite system binary offset carrier modulation code tracking loop discriminator |
| 本文献已被 CNKI 维普 等数据库收录！ |
