宇航计测技术

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基于FPGA的MBOC中频调制信号的实现

闫温合1,2,3;何在民1,2;胡永辉1,2;赵坤娟1,2,3;李瑾琳4   

  1. 1、中国科学院国家授时中心,西安 710600;
    2、中国科学院精密导航定位与定时技术重点实验室,西安 710600;
    3、中国科学院大学,北京 100039;
    4、湖北省电力公司信息通信分公司,武汉 430077
  • 出版日期:2014-04-15 发布日期:2014-04-15
  • 作者简介:闫温合(1988-),男,硕士研究生,主要研究方向:卫星导航定位与时间同步技术。
  • 基金资助:
    中科院“西部之光”人才培养计划“西部博士资助项目”(Y307YR6601)

Implementation of MBOC IF Modulation Signal Base on FPGA

YAN Wen-he1,2,3;HE Zai-min1,2;HU Yong-hui1,2;ZHAO Kun-juan1,2,3;LI Jin-lin4   

  1. 1、National Time Service Center, Chinese Academy of Sciences, Xi′an 710600;
    2、Key Laboratory for Precise Navigation, Positioning and Timing of Chinese Academy of Science, Xi′an 710600;
    3、University of Chinese Academy of Sciences, Beijing 100039;
    4、Information and Communication Branch of Hubei Electric Power Company,Wuhan 430077
  • Online:2014-04-15 Published:2014-04-15

摘要: MBOC调制信号是Galileo和GPS系统的互操作导航信号调制方式。在研究MBOC调制信号产生机理的基础上,对MBOC调制信号的特性进行了分析,并在现场可编程门阵列(FPGA)平台上实现了MBOC调制信号,给出了仿真和测试结果。实验表明,该实现方式正确可行,对于新的导航信号结构的研究和新一代接收机的研制具有极其重要的意义。

关键词: 混合二进制偏移载波调制, 功率谱, 可编程门阵列, 中频调制

Abstract: MBOC modulation signal is adopted by Galileo and GPS system for interoperation. Based on studying the generating principle of MBOC(time division data modulation binary offset carrier)modulation signal, the characteristics of MBOC modulation signal are analyzed. The MBOC modulation based on Field-Programmable Gate Array (FPGA) is realized by Verilog. The result is provided by simulation and test, and it shows that the implementation scheme is feasible. It is of great significance for the research of the new structure of navigation signal and the development of new generation receiver.

Key words: MBOC Modulation, Power spectrum, FPGA, Intermediate frequency modulation