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Tag: European Inventor Award

  • Galileo satellite team wins European Inventor Award

    The invisible signals that Europe’s Galileo satellites are beaming down to the world are officially award-winning: the team behind their design has won the European Inventor Award, run by the European Patent Office, reports the European Space Agency.

    The 12th European Inventor Award (Research) was given at a special ceremony on 15 June at the Arsenale di Venezia in Venice, Italy.

    Just like the Galileo satellites and their globe-spanning ground stations, the Galileo signals themselves needed to be designed, having to pack multiple Galileo services aimed at different classes of users within the limited frequency bands allocated for the system by the International Telecommunications Union.

    This task was accomplished by the Galileo Signal Task Force, a multinational group of experts who came up with a pair of innovative signal modulation techniques.

    This team was led by Spanish engineer José Ángel Ávila Rodríguez – now part of ESA’s Galileo team – and his French colleague Laurent Lestarquit from France’s CNES space agency, sharing in the European Patent Office’s European Inventor Award 2017.

    The team also includes German Günter Hein, formerly head of the department studying the evolution of EGNOS and Galileo for ESA, as well as Belgian Engineer Lionel Ries, now in ESA’s technical directorate, as well as French CNES engineer Jean-Luc Issler.

    “When the nations of Europe work together, the whole world benefits,” said José.

    With 18 satellites now in orbit, Galileo began Initial Services on 15 December 2016, so the two signals the team devised are now everyday reality.

    They took as their inspiration the GPS system, with signal shapes first designed back in the 1960s, but first fulfilling user needs today.

    The first signal technique is called Alternative Binary Offset Carrier modulation, or ‘AltBOC’ for short, combining four separate signals into one large ones – resulting in the largest bandwidth navigation signal ever transmitted.

    When used in its full performance AltBOC can support precision scientific applications such as geodetic measurements and seismic monitoring.

    The second modulation method, called Composite Binary Offset Carrier or ‘CBOC’, results in a signal for use by the mass market, possessing both narrowband and wideband components.

    The result is a signal that can work well with low-end receivers – such as those found in current smartphones – while the wideband component ‘future proofs’ the signal, allowing manufacturers to extend mass market receiver performance in the future.

    The other goal CBOC had to match was to be interoperable with GPS signals, allowing receivers to use both sets of signals at once on a seamless basis.

    With China planning to use a comparable CBOC-style solution for their Beidou satnav satellites, the resulting Galileo E1 Open Signal is set to become the new standard for mass market applications for the foreseeable future.

  • Galileo signal team nominated for invention award

    Galileo signal team nominated for invention award

    José Ángel Ávila Rodríguez (left)) and Laurent Lestarquit holding a satellite model. (Credit: ESA)

    The engineering team behind the signal technology underpinning Europe’s Galileo satellite navigation system has reached the final of this year’s European Inventor Award, run by the European Patent Office, reported the European Space Agency.

    The team is led by Spanish engineer José Ángel Ávila Rodríguez — now part of ESA’s Galileo team — and his French colleague Laurent Lestarquit from France’s CNES space agency.

    The team also includes German Günter Hein, formerly head of the department studying the evolution of EGNOS and Galileo for ESA, as well as Belgian Engineer Lionel Ries, now in ESA’s technical directorate, as well as French CNES engineer Jean-Luc Issler.

    The engineers, who had previously worked together as members of the multinational Galileo Signal Task Force, came up with a pair of innovative signal modulation techniques to pack multiple Galileo signals together, simultaneously serving different sets of users while boosting signal performance and robustness. Both innovations have been adopted by Galileo and are in use today.

    The first technique, called Alternative Binary Offset Carrier modulation — AltBOC — combines four signals into one large one, resulting in the widest bandwidth navigation signal ever transmitted. Two of these signals are sitting on the one carrier, namely E5a, while the other two are on E5b.

    “AltBOC is a way of transmitting four components in a very wide bandwidth signal, using a single radio frequency chain on the satellite in an intelligent way, where originally two chains would have been needed to transmit in two separate frequency bands (E5a and E5b),” explains José Ángel, now ESA’s global navigation satellite system evolution signal and security principal engineer for Galileo.

    “The result is a frequency-rich signal that fundamentally improves positioning performance and robustness.

    “AltBOC is interoperable with GPS in E5a/L5 and allows receiver manufacturers to process it as one very large signal – extending over the whole E5a and E5b range – or as two separate signals, one at each frequency carrier (E5a or E5b).

    “AltBOC serves open service users in general. Moreover, when used in its full performance mode (E5a+E5b), it also facilitates geodetic and precision scientific applications such as gradual tectonic motion, or the use of accurate positioning on Earth — including proposed ‘reflectometry’ missions to make altimetry measurements from satnav signals reflected from Earth’s surface.

    “But the application of AltBOC could go beyond the current use by providing accurate positioning to satellites in space thanks to its unique bandwidth characteristics.”