Galileo moves forward

July 19, 2004

The GalileoSat development and in-orbit validation phase is well under way and the European Space Agency (ESA) has just released its procurement process to Industry indicating that the first completely civil satellite navigation system is moving forward.

Galileo Implementation: a phased approach

The Galileo Programme is being implemented in three phases:
  • Definition phase
  • Development and in-orbit validation
  • Full Deployment and Operations

    The Definition phase was completed in 2003 resulting in the basic specifications for the system.

    The Development and In-Orbit Validation phase was initiated in late 2003. This phase aims to perform an in-orbit validation of the system using a reduced constellation of four satellites which is the minimum number to guarantee the provision of exact positioning and time at test locations.

    Early in this phase, an experimental satellite will also be launched, to secure the Galileo frequency filings, to characterize the orbits to be used by the in-orbit validation satellites and to test some of the critical technologies, such as the atomic clocks.

    The experimental satellite will be launched before the end of 2005. The in-orbit validation will take place before 2007.

    The Development and In-Orbit Validation phase will be followed by the Full Deployment phase which will cover the manufacturing and launch of the remaining satellites and the completion of the ground segment. Once all satellites have been fully deployed, the operation will initiate with the complete constellation of 27 operational satellites and three in reserve, all stationed on three circular Medium Earth Orbits (MEOs) at an altitude of 23 222 km and with an inclination of 56º to the equator. To support this there will be an extensive network of ground stations, and local and regional service centres. For its part the Galileo Joint Undertaking, created jointly by the European Commission and ESA, started the process for choosing the concessionaire, the future "Galileo Operating Company" which will take charge of the final deployment then the operations.

    Galileo: a global dimension in international cooperation

    In parallel to these technical steps the political aspects of this programme are evolving with the agreement dealt between the European Union and the United States. This agreement was signed in June 2004 at the EU-US summit in Dublin. This allows to truly envisage the compatibility and interoperability of Galileo and GPS for the benefit of everyone. Galileo with GPS, not forgetting the Russian system GLONASS, should become the world standard for satellite navigation. This underlines the global dimension of Galileo with agreements with other countries like China, India, Canada, Israel either signed or under discussion.

    All phases of Galileo are advancing in the same direction for the implementation of a system that will revolutionize our daily lives in various sectors, offering Europeans, and indeed the world at large, an accurate and secured means of satellite positioning.
    -end-


    European Space Agency

    Related Galileo Articles from Brightsurf:

    Analysis of Galileo's Jupiter entry probe reveals gaps in heat shield modeling
    The entry probe of the Galileo mission to Jupiter entered the planet's atmosphere in 1995 in fiery fashion, generating enough heat to cause plasma reactions on its surface.

    Table salt compound spotted on Europa
    New insight on Europa's geochemistry was hiding in the visible spectrum.

    UMass Amherst Researchers offer new physics rule to find mechanical strain
    Addressing a physics problem that dates back to Galileo, three University of Massachusetts Amherst researchers this week propose a new approach to the theory of how thin sheets can be forced to conform to 'geometrically incompatible' shapes -- think gift-wrapping a basketball -- that relies on weaving together two fundamental ideas of geometry and mechanics that were long thought to be irreconcilable.

    Astronomers use Earth's natural history as guide to spot vegetation on new worlds
    By looking at Earth's full natural history and evolution, astronomers may have found a template for vegetation fingerprints -- borrowing from epochs of changing flora -- to determine the age of habitable exoplanets.

    Study co-authored by UCLA scientists shows evidence of water vapor plumes on Jupiter moon
    A combination of new modeling techniques and data from the Galileo spacecraft's flyby of Jupiter's icy moon Europa back in 1997 have revealed additional evidence of eruptions of water vapor, or plumes, venting from the moon.

    Old data, new tricks: Fresh results from NASA's Galileo spacecraft 20 years on
    Newly analyzed data from the Galileo spacecraft's flybys of one of Jupiter's moons two decades ago is yielding fresh insights: the magnetic field around the moon Ganymede makes it unlike any other in the solar system.

    Catching up to brain cancer
    University of Delaware researchers have produced a new and freely available computer program that predicts cancer cell motion and spread with high accuracy.

    UQ physicist builds on Einstein and Galileo's work
    Sixteenth century scientist Galileo Galilei threw two spheres of different mass from the top of the Leaning Tower of Pisa to establish a scientific principle.

    Venetian physician had a key role in shaping early modern chemistry
    Newly discovered notes show for the first time the Venetian doctor who invented the thermometer and helped lay the foundations for modern medical treatment also played a key role in shaping our understanding of chemistry.

    Falsifying Galileo satellite signals will become more difficult
    The European Union activated its Galileo satellite navigation system in December 2016.

    Read More: Galileo News and Galileo Current Events
  • Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.