Test and Evaluation of a System for Precise Time-Dissemination Using DME (VORTAC) Synchronization.

Abstract

The report covers the test and evaluation of an experimental system designed to provide precise time to aircraft via a DME (Distance Measuring equipment) (VORTAC) ground station modified to use a cesium-beam atomic clock for a time base. Data acquired from a flight test at NAFEC demonstrated the feasibility of this time-dissemination concept for application in time/frequency collision avoidance systems. The standard deviation of time-dissemination error was found to be 0.47 microseconds. DME one-way ranging capability was also demonstrated, wherein ranging accuracy of a modified airborne DME operated one-way averaged 0.1-nmi difference over that of an unmodified airborne DME in conventional two-way operation. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1973
Accession Number
AD0766897

Entities

People

  • Vincent J. Luciani

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Airborne
  • Atomic Clocks
  • Clocks
  • Collision Avoidance
  • Collision Avoidance Systems
  • Communication Equipment
  • Construction Equipment
  • Distance Measuring Equipment
  • Earth Handling Equipment
  • Ground Stations
  • Range Finding
  • Test And Evaluation

Fields of Study

  • Physics

Readers

  • Aviation Safety and Air Traffic Management
  • Positioning, Navigation, and Timing (PNT) Technology.