Long-Term Performance Analysis of GIOVE Clocks

Abstract

Passive Hydrogen Maser (PHM) and Rubidium Atomic Frequency Standard (RAFS) are the two baseline on-board clock technologies for Galileo, the European Global Navigation Satellite System (GNSS), which are currently being validated on-board two experimental spacecrafts, GIOVE-A and GIOVE-B. These two spacecraft are orbiting in a Galileo-representative orbit and transmit Galileo-representative signals that are tracked and collected by a network of evenly distributed sensor stations (the Galileo Experimental Sensor Stations). The collected observables (pseudo-range and carrier phase) are being processed by the GIOVE Processing Centre, providing, as one of its core products, the estimation of the phase offset between the on-board clock and a reference clock, chosen to be an Active Hydrogen Maser connected to one of the sensor stations.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2010
Accession Number
ADA634547

Entities

People

  • Alice Cernigliaro
  • Daniel A Rodriguez
  • Francisco Gonzalez
  • Guillermo Tobias
  • Ilaria Sesia
  • Patrizia Tavella
  • Pierre Waller
  • Stefano Binda

Organizations

  • European Space Agency

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Atomic Beam Masers
  • Elements
  • Frequency
  • Frequency Shift
  • Global Navigation Satellite Systems
  • Hydrogen
  • Masers
  • Measurement
  • Navigation
  • Navigation Satellites
  • Networks
  • Phase Measurement
  • Solar Radiation
  • Spacecraft
  • Standards
  • Time Intervals

Readers

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

Technology Areas

  • Space