Accession Number:
ADA634547
Title:
Long-Term Performance Analysis of GIOVE Clocks
Descriptive Note:
Conference paper
Corporate Author:
EUROPEAN SPACE AGENCY NOORDWIJK (NETHERLANDS)
Personal Author(s):
Report Date:
2010-11-01
Pagination or Media Count:
11.0
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.
Descriptors:
Subject Categories:
- Lasers and Masers
- Unmanned Spacecraft