系统工程与电子技术 ›› 2022, Vol. 44 ›› Issue (12): 3800-3810.doi: 10.12305/j.issn.1001-506X.2022.12.25

• 制导、导航与控制 • 上一篇    

北斗系统C波段导航信号调制方式及性能评估

倪育德1, 邹玲1, 刘瑞华1,*, 陈万通1, 秦哲2, 王凯1   

  1. 1. 中国民航大学电子信息与自动化学院, 天津 300300
    2. 中国民航大学中欧航空工程师学院, 天津 300300
  • 收稿日期:2021-10-25 出版日期:2022-11-14 发布日期:2022-11-24
  • 通讯作者: 刘瑞华
  • 作者简介:倪育德 (1963—), 男, 教授, 硕士, 主要研究方向为全球导航卫星系统、陆基导航系统|邹玲 (1996—), 女, 硕士研究生, 主要研究方向为卫星导航信号调制方式|刘瑞华 (1965—), 男, 教授, 博士, 主要研究方向为卫星导航|陈万通 (1986—), 男, 副教授, 博士, 主要研究方向为卫星导航|秦哲 (1981—), 男, 讲师, 博士, 主要研究方向为光子学与技术|王凯 (1982—), 男, 副教授, 硕士, 主要研究方向为机载电子系统测试与仿真
  • 基金资助:
    中央高校基本科研业务费专项基金(ZXH2011C013);国家重点研发项目(2016YFB0502402)

C-band navigation signal modulation mode and performance evaluation of BeiDou system

Yude NI1, Ling ZOU1, Ruihua LIU1,*, Wantong CHEN1, Zhe QIN2, Kai WANG1   

  1. 1. College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China
    2. Sino-Europe Institute of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
  • Received:2021-10-25 Online:2022-11-14 Published:2022-11-24
  • Contact: Ruihua LIU

摘要:

针对C波段卫星导航信号严格的兼容性约束要求, 探索性地将基于椭圆球面波函数的连续相位调制(continuous phase modulation based on prolate spheroidal wave functions, CPM-PSWF)应用于C波段导航。在分析了关键参数对CPM-PSWF信号功率谱特性影响后, 初步筛选出4个CPM-PSWF子族作为C波段候选导航信号, 并对其导航性能指标进行评估。在权衡C波段信号频谱兼容性和各导航性能指标基础上, 提出将“QM2PSWF(10) C=6”且h=0.5的CPM-PSWF信号用作北斗系统C波段的导航信号。研究表明, 所提出的CPM-PSWF信号频谱泄露少, 带外衰减快, 同时在码跟踪精度与抗多径性能方面, 较当前C波段非CPM-PSWF候选导航信号更具竞争力。

关键词: C波段导航, 基于椭圆球面波函数的连续相位调制, 兼容性, 导航性能

Abstract:

In view of the strict compatibility constraint requirements of C-band satellite navigation signals, continuous phase modulation based on prolate spheroidal wave functions(CPM-PSWF) is exploratorily applied to C-band navigation. After analyzing the influence of key parameters on the power spectrum characteristics of CPM-PSWF signal, four CPM-PSWF sub-families are initially screened as candidate navigation signals for C-band, and their navigation performance indicators are also evaluated. On the basis of weighing the spectrum compatibility of the C-band signal and various navigation performance indicators, it is proposed to use the CPM-PSWF signal with "QM2PSWF(10) C=6" and h=0.5 as the C-band navigation signal of the BeiDou system. The research shows that compared with the current C-band non-CPM-PSWF candidate navigation signal, the proposed CPM-PSWF signal spectrum leakage is less, the out-of-band attenuation is faster, and the code tracking accuracy and anti-multi-path performance are more competitive.

Key words: C-band navigation, continuous phase modulation based on prolate spheroidal wave functions (CPM-PSWF), compatibility, navigation performance

中图分类号: