| 北斗三号B1频点信号软模拟源设计 |
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| 引用本文： | 贾晓辉,克兢,王雪,张志敏.北斗三号B1频点信号软模拟源设计[J].全球定位系统,2022,47(1):9-17. |
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| 作者姓名： | 贾晓辉 克兢 王雪 张志敏 |
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| 作者单位： | 1.中国科学院国家授时中心, 西安710600 |
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| 基金项目： | 中国科学院国家授时中心“青年创新人才”项目 (2013AA122701) |
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| 摘 要： | 通过对全球卫星导航系统(GNSS)完整信号流程的精密仿真,建立合理的卫星信号数学模型,产生多种环境下的中频信号,能够为GNSS服务性能评估提供良好的仿真和测试平台,对导航信号各层结构模块化处理并优化算法.?导航电文模块结合轨道仿真软件外推轨道参数,保证了电文参数的真实有效性.?数据采用分段产生信号再校验叠加的方式,保证...
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| 关 键 词： | B1频点 中频信号 轨道仿真 导航电文 参数外推 |
| 收稿时间： | 2021-08-20 |
The design of BDS-3 B1 frequency point soft signal analog source |
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| Affiliation: | 1.National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, China2.Key Laboratory of Precise Positioning and Timing Technology, Chinese Academy of Sciences, Xi’an 710600, China3.University of Chinese Academy of Sciences, Beijing 100049, China4.Xidian University, Xi’an 710071, China |
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| Abstract: | Through precise simulation of the complete signal process of the Global Navigation Satellite System (GNSS), a reasonable mathematical model of satellite signals is established to generate intermediate frequency signals in various environments, which can provide a good simulation and test platform for the evaluation of the service performance of the GNSS. Modularize and optimize the algorithm for each layer structure of the navigation signal. The navigation message module combined with track simulation software extrapolates the orbital parameters to ensure the authenticity of the message parameters. The data adopts the method of generating the signal in sections and then checking and superimposing. It ensures the alignment and superposition of the multi-layer structure of the signal, ensures the continuity of the signal code and the phase of the carrier, and ensures the stability of the analog source when generating a high sampling rate and long duration signal. The software receiver is used to analyze the signal to verify the effectiveness of the signal analog source. |
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