The Role of Time and Frequency in Egnos (European Geostationary Navigation Overlay System)

Abstract

The European Geostationary Navigation Overlay System (EGNOS) is being developed in Europe to provide GPS and GLONASS regional augmentation services to aviation, maritime, and land users. EGNOS will provide the following services: (1) GEO-based GPS-like Ranging signals to improve the availability and continuity of GPS and GLONASS navigation services. (2) Ground Integrity Channel (GZC) to improve the integrity of GPS- and GLONASS-based navigation and position determination for safety-critical applications. And (3) Wide-Arm Differential corrections WAD) to improve the accuracy of GPS-SPS and GLONASS. Additionally, EGNOS will disseminate accurate time to users, synchronized to GPS, GLONASS, and UTC time scales. The paper provides an overview of EGNOS ground-segment architecture, gives requirements related to time aspects, and describes ,preliminary analysis and performances through test trials. It also covers initial results achieved in the frame of the EURIDIS program, conducted by CNES, after several months of measurements.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1998
Accession Number
ADA510491

Entities

People

  • A. Batchelor
  • A. Job
  • J. Legenne
  • J. M. Pieplu
  • M. Brunet

Organizations

  • European Space Agency

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Antennas
  • Artificial Satellites
  • Availability
  • Clocks
  • Composite Materials
  • Data Sets
  • Earth Orbits
  • Filters
  • Frequency
  • Geosynchronous Orbits
  • Geosynchronous Satellites
  • Measurement
  • Navigation
  • Networks
  • Orbits
  • Payload

Readers

  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Space
  • Space - Satellites