Galileo Development Forges Ahead Pending Ministerial Decisions

GPS NEWS

Galileo will consist of 30 satellites in medium Earth orbit supported by a global network of ground control and monitoring stations. A user with a receiver will be able to determine his or her position to within a few metres from signals broadcast by three or four of the satellites.

Paris - Nov 6, 2001
The future funding and implementation of Galileo, Europe's own Global Satellite Navigation System, will be major topics for decision at the ESA ministerial on 14-15 November and at the EU's Transport Council in December. In the meantime, ESA is forging ahead with developing and testing the technology for the billion-Euro project.

Work on new technologies needed for the constellation and the ground segment has been continuing apace at ESA's technical centre, ESTEC in the Netherlands.

Critical technologies include the development of on-board clocks for the satellites, signal generators to produce the variety of positioning signals that the Galileo spacecraft will broadcast; power amplifiers; antennae; timing units to correct the on-board clocks; and a system simulation facility to test strategies for coping with contingencies when the full system is up and running. In addition, ESA has started working on technologies needed for hand-held Galileo receivers.

Good progress has also been made with the first stage of the Galileo System Test Bed (GSTB) which allows engineers to validate Galileo-specific control algorithms, such as clock adjustments, and procedures for predicting individual satellite orbits, before the full system goes into operation. The second stage will allow critical technologies to be tested on satellites in medium Earth orbit.

The ESA and EU ministers are expected to confirm Galileo and to approve the Galileo development programme.

SPACEMART

Germany Commits Billions To Galileo Navigation Project

Berlin (AFP) May 16, 2001
The German government said Wednesday it had pledged eight billion marks (four billion euros, 3.5 billion dollars) over the next four years to a new space exploration program, the country's first in nearly two decades.

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