北京航空航天大学学报 ›› 2019, Vol. 45 ›› Issue (7): 1406-1414.doi: 10.13700/j.bh.1001-5965.2018.0631

• 论文 • 上一篇    下一篇

基于信道复用方法的GNSS共视信号模拟

李博闻1,2, 蔚保国1, 张波2, 韩华1, 宋伟2, 吴迪2   

  1. 1. 卫星导航系统与装备技术国家重点实验室, 石家庄 050000;
    2. 北京航空航天大学 电子信息工程学院, 北京 100083
  • 收稿日期:2018-11-05 出版日期:2019-07-20 发布日期:2019-07-25
  • 通讯作者: 张波 E-mail:bozhang@buaa.edu.cn
  • 作者简介:李博闻 男,博士研究生。主要研究方向:GNSS-R理论与应用、GNSS信号仿真;蔚保国 男,博士,研究员,博士生导师。主要研究方向:卫星导航总体技术;张波 男,博士,讲师,硕士生导师。主要研究方向:扩频通信、卫星导航及其应用等;韩华 男,硕士,工程师。主要研究方向:GNSS卫星共视技术;宋伟 男,博士研究生。主要研究方向:卫星导航信号处理及应用技术;吴迪 女,硕士研究生。主要研究方向:GNSS-R理论与应用、GNSS信号仿真。
  • 基金资助:
    新技术研究高校合作项目(KX162600040)

Simulation of GNSS CV signal based on channel multiplexing method

LI Bowen1,2, YU Baoguo1, ZHANG Bo2, HAN Hua1, SONG Wei2, WU Di2   

  1. 1. State Key Laboratory of Satellite Navigation System and Equipment Technology, Shijiazhuang 050000, China;
    2. School of Electronics and Information Engineering, Beihang University, Beijing 100083, China
  • Received:2018-11-05 Online:2019-07-20 Published:2019-07-25
  • Supported by:
    University Cooperative Project on New Technology Research (KX162600040)

摘要: 全球导航卫星系统(GNSS)共视(CV)技术应用中需要对GNSS共视信号进行模拟仿真,可以降低对共视接收机和共视算法进行测试过程中的成本。为此,提出了一种基于信道复用方法的GNSS共视信号的双路信号模拟方法。首先,对GNSS共视技术原理进行了分析。然后,根据GNSS直射信号的模拟思路,设计了基于GNSS直射信号模拟器的GNSS共视信号模拟方法,对共视信号传播过程中可能产生的误差进行了分析。最后,对零基线、短基线、长基线3种场景下仿真的共视信号,以及实场采集的试验数据进行了验证分析。验证的结果表明,仿真的GNSS共视信号定位准确,定位精度在米级;共视比对结果均方根值(RMS)精度优于12 ns,可以进行共视法时间传递,证明了提出的共视信号模拟方法能够有效地用于GNSS共视信号生成。对GNSS共视信号模拟器、共视接收机的研制和共视算法的研究具有一定的理论参考意义和实际应用价值。

关键词: 全球导航卫星系统(GNSS), 共视(CV)信号, 时间传递, 模拟仿真, 实场试验

Abstract: In the application of global navigation satellite system (GNSS) common view (CV) technology, the simulation of the GNSS CV signal is needed to reduce the cost of testing the CV receiver and the CV algorithm. For this reason, a channel multiplexing method of signal simulation of GNSS CV signal is proposed. First, the principle of GNSS CV technology is analyzed. The GNSS CV signal simulation method based on GNSS direct signal simulator was designed, and the possible errors in the process of CV signal transmission were analyzed. Finally, the CV signal of the simulation under zero base line, short base line and long base line, as well as the experimental data collected by an experiment were verified and analyzed. The result of verification shows that the simulated GNSS CV signal is located accurately and the positioning accuracy is in meter level. The result of CV comparison shows that the accuracy of root mean square (RMS) is better than 12 ns. The time transfer of CV method can be carried out, which proves that the proposed CV signal simulation method can be effectively used to generate GNSS CV signal. It has certain theoretical reference significance and practical application value for the development of GNSS CV signal simulator and CV receiver and for the study of CV algorithm.

Key words: global navigation satellite system (GNSS), common view (CV) signal, time transfer, simulation, real field test

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