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| 一种BOC信号测距码结构监测方法 | |
| 引用本文： | 王垚,罗显志,杨莘元. 一种BOC信号测距码结构监测方法[J]. 弹箭与制导学报, 2011, 31(4): 167-171 |
| 作者姓名： | 王垚 罗显志 杨莘元 |
| 作者单位： | 1. 哈尔滨工程大学信息与通信工程学院,哈尔滨150001;河北省卫星导航技术与装备工程技术研究中心,石家庄050081 2. 河北省卫星导航技术与装备工程技术研究中心,石家庄,050081 3. 哈尔滨工程大学信息与通信工程学院,哈尔滨,150001 |
| 基金项目： | 武器装备预研基金; 国家863计划(2008AA12Z302)资助 |
| 摘 要： | 测距码结构监测是信号监测系统的重要组成部分,但接收的信号往往淹没于噪声中,无法从时域中提取出测距码序列。推导了BOC信号的通用自相关与功率谱密度的表达式,并提出了一种适用于低信噪比下的BOC信号测距码解码方法。该方法利用导航信号的循环平稳特性与噪声的平稳特性,通过谱相关理论估计信号的多普勒和码速率,取小于一个码周期的数据与原始数据滑动相关去除电文的影响,然后剥离副载波恢复出测距码的时域波形,通过仿真分析BOC(1,1)信号验证了算法的有效性。 |
| 关 键 词： | 全球卫星导航系统 信号监测 测距码 循环谱 滑动相关 |
A Monitoring Method for BOC Signal Ranging Code |
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| WANG Yao,LUO Xianzhi,YANG Shenyuan. A Monitoring Method for BOC Signal Ranging Code[J]. Journal of Projectiles Rockets Missiles and Guidance, 2011, 31(4): 167-171 | |
| Authors: | WANG Yao LUO Xianzhi YANG Shenyuan |
| Affiliation: | WANG Yao1,2,LUO Xianzhi2,YANG Shenyuan1(1 College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China,2 Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Centre,Shijiazhuang 050081,China) |
| Abstract: | Ranging code monitoring is one of the most important functions of signal monitoring system.However,the received signal is often buried in noise,and the ranging codes are not visible in time domain.The autocorrelation and power spectral density functions of BOC signal were derived,and a BOC ranging code decoding method was proposed in low SNR.In this method,Doppler frequency and code rate were estimated by spectral correlation theory based on signal's cyclostationarity and noise's wide sense stationary.After... |
| Keywords: | Global navigation satellite system signal monitoring ranging code cyclic spectrum slide-correlation |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
