| 基于二进制偏移载波(BOC)调制方式的卫星导航技术研究 |
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| 引用本文： | 张怡,张西凯,陈利民.基于二进制偏移载波(BOC)调制方式的卫星导航技术研究[J].弹箭与制导学报,2011,31(1):181-184. |
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| 作者姓名： | 张怡 张西凯 陈利民 |
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| 作者单位： | 西北工业大学电子信息学院,西安,710072 |
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| 基金项目： | 国家自然科学基金，航空科学基会，2011年西北工业大学本科毕业设计重点扶持项目 |
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| 摘 要： | 在有限的卫星导航定位系统频带中为了合理有效的利用频率资源而又不相互干扰,文中采用了基于BOC(binary offset carrier)调制方式的扩频信号直接捕获方法。针对传统的单边带处理法,提出了一种改进的单边带均值法,并对不同信噪比下的峰值检测结果进行了Matlab仿真。仿真结果表明,单边带均值法能减小噪声干扰缩短捕获时间、减小误捕的概率,能使捕获精度得到大大提高。
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| 关 键 词： | 二进制偏移载波 相关函数 峰值检测 单边带均值法 捕获精度 |
The Research of Satellite Navigation Technology Based on BOC Modulation |
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| ZHANG Yi,ZHANG Xikai,CHEN Limin.The Research of Satellite Navigation Technology Based on BOC Modulation[J].Journal of Projectiles Rockets Missiles and Guidance,2011,31(1):181-184. |
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| Authors: | ZHANG Yi ZHANG Xikai CHEN Limin |
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| Affiliation: | ZHANG Yi,ZHANG Xikai,CHEN Limin(School of Electronics and Information,Northwestern Polytechnical University,Xi'an 710072,China) |
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| Abstract: | In order to use the frequency resources rationally and effectively and not interfere with each other in a limited band of satellite navigation and positioning system,the direct spread-spectrum signal acquisition based on BOC modulation method was used.An improved single side band(SSB) average method was proposed for the traditional SSB processing method and its performance was analyzed.The simulation results show that SSB average method can effectively reduce the noise,and more significant result can be obt... |
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| Keywords: | BOC correlation function peak detection SSB average method capture accuracy |
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