Time Dissemination at Shanghai Observatory

Abstract

After a brief review of the historic status of HF standard frequency and time signal transmission (call signs are BPV and XSG respectively) at Shanghai Observatory (SO), this paper describes recent progress in time comparison and synchronization at SO, including Loran C, TV synchronization, portable clock, laser pulses and geostationary satellite methods. Finally, the planned international T/F links between SO and other TIF laboratories will also be presented, such as the utilization of the ranging signals of the Japanese Geostationary Meteorological Satellite,the Global Positioning System (CPS) and the VLBI technology.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1985
Accession Number
ADA494371

Entities

People

  • Zhuang Qixiang

Organizations

  • Chinese Academy of Sciences

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Demodulators
  • Frequency
  • Information Operations
  • Measurement
  • Microwaves
  • Modulators
  • Morse Code
  • Observatories
  • Time Intervals

Fields of Study

  • Environmental science

Readers

  • Defense Technology Research and Development.
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Space/Atmospheric Physics.

Technology Areas

  • Directed Energy
  • Space