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ESOC’s Navigation Support Office generated the first Precise Orbit Determination for FOC Galileo Satellite – GALSAT 202

Thursday, March 19th, 2015

On Thursday, 19 March 2015, the Navigation Support Office located at the ESA’s European Space Operations Centre in Darmstadt (Germany), performed the first Precise Orbit Determination (POD) of the second FOC Galileo Satellite – GALSAT 202. The POD for Galileo 202 was based on the processing of signals in the L-Band, transmitted by the Galileo satellite and received by the Navigation Support Office’s global distributed GNSS sensor station network in conjunction with data from the International GNSS Service (IGS) network of sensor stations, used in the context of the MGEX experiment.

ESA’s Navigation Support Office supports the In-Orbit Test of the 1st Galileo FOC satellite

Tuesday, March 17th, 2015

December 2014/January 2015 ESA’s Navigation Support Office supports the In-Orbit Test (IOT) of the 1st Galileo Full Operational Capability (FOC) satellite. This IOT is of particular importance to the Galileo project since it for the first time allows the analysis and evaluation of Galileo FOC satellite performance and in this case for a satellite in a non-nominal, elliptical orbit.

ESA’s Navigation Support Office performed the very first Precise Orbit Determination for the 1st Galileo FOC satellite (GSAT201)

Tuesday, March 17th, 2015

GSAT201 is the first FOC satellite and one of the two Galileo satellites delivered into a wrong orbit by VS09 Soyuz-Fregat in August. After a successful recovery, GSAT201 transmitted its first signal on Saturday 29 November 2014. Although, the target orbit is not nominal, ESA’s Navigation Support Office performed the very first POD on 3rd December with promising accuracy.

ESA’s Navigation Support Office performs Precise Orbit Determination of GOCE re-entry phase

Tuesday, March 17th, 2015

During the last days of the GOCE mission, after the GOCE spacecraft ran out of fuel, it slowly decayed before finally re-entering the atmosphere on the 11th November 2013. As an integrated part of the AOCS, GOCE carried a GPS receiver that was in operations during the re-entry phase. This feature provided a unique opportunity for Precise Orbit Determination (POD) analysis.

As part of the activities carried out by the Navigation Support Office, precise ephemerides of the GOCE satellite have been reconstructed for the entire re-entry phase based on the available GPS observations of the on-board receiver.

Further information can be found at: Precise Orbit Determination of the GOCE re-entry phase

ESA’s Navigation Support Office started cooperation with University of Bern – National PhD Initiative (NPI)

Tuesday, March 17th, 2015

September 2014 The Navigation Support Office started a joint research activity in cooperation with the University of Bern on the combination of precise GNSS orbit and clock solutions in a multi-constellation, multi-frequency environment.

ESA’s Navigation Support Office supports ESA’s ATV-5 mission

Tuesday, March 17th, 2015

5 August 2014 The Navigation Support Office supports again the ATV (Automated Transfer Vehicle) control center for its last mission.  Two weeks before the actual rendezvous with the ISS (International Space Station) it provides predictions on the expected position accuracy of the GPS receivers used for the relative orbit determination done on-board. Until a relative distance of about 250 m, ATV Guidance, Navigation and Control will rely on the embedded Relative GPS Navigation algorithm that uses the ATV GPS receiver data in combination with the ISS GPS receiver data received through a proximity link.

Galileo getting ready for launch

Thursday, July 7th, 2011

7 July, 2011

The first Galileo satellites are getting ready for launch in the Autumn of 2011 from Europe’s Spaceport in French Guiana using Soyuz launchers, as reported here.

ESA’s Navigation Facility ready for the future

Friday, December 15th, 2006

29 June 2006

Navigation Facility Navigation Facility Drawing

ESA’s recently opened Navigation Facility has fast become a world-class provider of highly accurate navigation information, significantly enhancing data from cornerstone systems including GPS, EGNOS and – soon – Galileo.

In full operation since February 2006, ESA’s Navigation Facility, located at ESOC, the European Space Operations Centre, is producing a growing series of processed data products providing some of the world’s most accurate orbit and clock calculations related to GNSS, or global navigation satellite systems.

These consist of America’s well-known GPS (Global Positioning Satellite) system, Russia’s GLONASS system and, soon, Europe’s own Galileo system.

More …

GIOVE-A laser ranging campaign successful

Tuesday, October 3rd, 2006

3 October 2006

Fourteen laser ranging stations participated in a campaign to track ESA’s GIOVE-A satellite during the spring and summer of 2006, providing invaluable data for the characterisation of the satellite’s on-board clock. The campaign was coordinated by the International Laser Ranging Service (ILRS) and the GIOVE Processing Centre at ESA-ESTEC.

GIOVE-A, developed by Surrey Satellite Technology Ltd (UK), was launched from Baikonur Cosmodrome on 28 December 2005 and placed into a medium Earth orbit with an altitude of 23 260 km. Carrying a payload consisting of rubidium clocks, signal generation units and a phase array of individual L-band antenna elements, GIOVE-A started broadcasting Galileo signals on 12 January, securing the frequencies allocated by the International Telecommunications Union for the Galileo system.

More …

IGS Workshop 2006 (program and presentations)

Wednesday, September 13th, 2006

ESOC’s Navigation Support Office has recently organised the IGS workshop at its facilities in ESOC Darmstadt, Germany.

The activities comprised plennary sessions for four days, several splinter sessions on specific topics of interests and a parallel poster session.

The event was very well attended with over 100 atendees from 30 countries …

The contents of the workshop can be downloaded in electronic form from:

IGS Workshop 2006 (programme and presentations)