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兵工学报 ›› 2010, Vol. 31 ›› Issue (12): 1680-1685.

• 研究简报 • 上一篇    下一篇

基于码跟踪的GPS/Galileo兼容性分析研究

王垚1,2, 杨莘元1, 蔚保国2   

  1. (1.哈尔滨工程大学 信息与通信工程学院, 黑龙江 哈尔滨 150001;2.中国电子科技术集团公司第五十四研究所, 河北 石家庄 050081)
  • 收稿日期:2009-04-17 修回日期:2009-04-17 上线日期:2014-05-04
  • 通讯作者: 王垚 E-mail:wy_hrbeu@163.com
  • 作者简介:王垚(1983—),男,博士研究生
  • 基金资助:
    武器装备重点基金资助课题

Research on Compatibility Analysis Between GPS and Galileo Systems Based on Code Tracking

WANG Yao1,2, YANG Shen-yuan1, YU Bao-guo2   

  1. (1.School of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China;2.The 54th Institute of China Electronic Technology Corporation, Shijiazhuang 050081, Hebei, China)
  • Received:2009-04-17 Revised:2009-04-17 Online:2014-05-04
  • Contact: WANG Yao E-mail:wy_hrbeu@163.com

摘要: 传统全球卫星导航系统(GNSS)兼容性方法是基于接收机即时通道推导的,不能反映干扰对码跟踪的影响。考虑干扰信号对超前通道与滞后通道的影响,引入码跟踪谱敏感系数(CT_SSC),提出了一种基于码跟踪的GNSS兼容性分析方法。仿真分析了多种系统信号设置下的信号间CT_SSC特性,与传统兼容性分析方法的结果进行了比较。最后,在对星地链路预算精确建模的基础上,采用码跟踪的兼容性方法仿真分析了GPS与Galileo卫星导航系统间的兼容性,得出以GPS C/A码作为期望信号时,全球范围内GPS系统内干扰最大值为1.26 dB,Galileo系统对GPS系统干扰最大值为0.63 dB,而采用传统方法将会低估这种干扰的影响。

关键词: 通信技术, 兼容性, GNSS, SSC, CT_SSC, 码跟踪

Abstract: The traditional Global Navigation Satellite System (GNSS) compatibility analysis methodology is deduced by receiver prompt channel, which could not reflect the effect of interference onto code tracking. A interference coefficient, called Code Tracking Spectral Sensitivity Coefficient (CT_SSC), is introduced. And a GNSS compatibility analysis methodolody based on code tracking is presented. Then the CT_SSC characteristic among signals is analized under various signal setting and the GNSS compatibility traditional methodology. Finally, on the basis of accurate satellite-ground link budget modeling, intrasystem interference in GPS and intersystem interference between GPS and Galileo are caculated by using compatibility methodology based on code tracking. The results show that when GPS C/A signals is desired signals, all over the world the maximum intrasystem interference is 1.26 dB, meanwhile intersystem interference of Galileo system on GPS system is 0.63. While the effects of GNSS interference signals will be understimated by using traditional method.

Key words: communication technology, compatibility, GNSS, SSC, CT_SSC, code tracking

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