宇航计测技术 ›› 2013, Vol. 33 ›› Issue (3): 23-27.doi: 10.12060/j.issn.1000-7202.2013.03.05

• 论文 • 上一篇    下一篇

BPM授时信号传输损耗的仿真建模

郭美军1,2,3；华宇1,3；高媛媛1,3；鲁瑞勇4   

  1. 1、中国科学院国家授时中心，陕西西安 710600；
    2、中国科学院大学，北京 100039；
    3、中国科学院精密导航定位与定时技术重点实验室，陕西西安 710600；
    4、国家广播电影电视总局成都测试台，四川成都 611130
  • 出版日期:2013-06-15 发布日期:2013-06-15

Modeling and Simulation of BPM Time Service Signal Transmission Loss

GUO Mei-jun1,2,3；HUA Yu1,3；GAO Yuan-yuan1,3；LU Rui-yong4   

  1. 1、National Time Service Centre, Chinese Academy of Sciences, Xi′an, Shanxi 710600;
    2、University of Chinese Academy of Sciences, Beijing 100039;
    3、Key Laboratory of Precision Navigation and Timing Technology, National Time Service Center,Chinese Academy of Sciences, Xi′an, Shanxi 710600;
    4、Chengdu monitor station of State Administration of Radio Film and Television, Chengdu, Sichuan 611130
  • Online:2013-06-15 Published:2013-06-15

PDF (PC)

被引次数

2

摘要： 为了适应BPM发播系统升级改造，需要远场监测BPM授时信号的场强，因此有必要研究短波信道传输损耗，建立适当的计算模型。通过分析现有传输损耗理论模型，综合考虑地波、天波对BPM授时信号传输损耗的影响，在Labwindows/CVI开发环境下设计了BPM授时信号场强预测软件。通过将预测值与实测值比较，表明了该软件的可行性和准确性，可用于BPM授时信号场强的远场监测。

关键词: 传输损耗, BPM, 天波, 地波, Labwindows/CVI

Abstract: In order to complete the upgrade of the BPM broadcasting system, it needs to monitor the field strength of BPM signal in far field. Therefore, it is necessary to research the transmission loss of the radio channel and construct an appropriate model. On the basis of analyzing the transmission loss model, both the influences of sky wave and ground wave on BPM signal are taken into account. The software developed in Labwindows/CVI is designed to calculate the field strength of BPM signal in remote field. The comparison between the measured and predicted value of field strength indicate the availability and accuracy of the software. And it can be applied to monitor the field strength of BPM signal in far field.

Key words: Transmission loss, BPM, Sky wave, Ground wave, Labwindows/CVI

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