A New Two-Way Time Transfer Modem

Abstract

The use of commercial communications satellites for precise time transfer has been performed with a variety of techniques for a number of years. Military communications systems can also provide this function in a few deployed systems. This paper will describe a new design of a time transfer modem that can be produced a reasonable cost and enable users to make direct comparisons with the Naval Observatory with nanosecond precision. A flexible, all-digital design is being implemented that will enable a variety of different codes to be employed. Compatibility with existing equipment, such as the HARTL Modem, is a goal of this development. The design and operating modes of this equipment will be described.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1989
Accession Number
ADA504952

Entities

People

  • A. Gifford
  • G. P. Landis
  • J. A. Murray
  • J. D. White
  • R. L. Beard

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Acquisition
  • Artificial Satellites
  • Clocks
  • Code Division Multiplexing
  • Commercial Communications
  • Data Rate
  • Frequency
  • Measurement
  • Military Research
  • Modems
  • Personality
  • Software Development
  • Spectra
  • Spectral Lines
  • Time Intervals
  • United States

Readers

  • Computational Modeling and Simulation
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Radio communications and signal processing.

Technology Areas

  • Fully Networked C3
  • Fully Networked C3 - Command and Control
  • Space
  • Space - Satellites