GNSS

Directions 2017: The year of Galileo

December 9, 2016By
paul-verhoef-galileo-o

I write at an especially exciting moment for the Galileo satellite navigation system, as two flagship European programmes combine for the very first time. Mid-November will see the very first Galileo launch using an Ariane 5 launcher from Europe’s Spaceport in French Guiana, in place of the Soyuz that has served the constellation up until now. Four instead of two... read more

2 Galileo satellites join constellation

December 8, 2016By
Europe's 13th and 14th Galileo satellites being encapsulated inside their launcher fairing. (Photo: ESA)

Galileo satellites 13 and 14 have begun transmitting navigation signals as fully operational members of the constellation. The pair were launched from Europe’s Spaceport in French Guiana on May 24. After launch and maneuvers to reach their final orbital altitude, their navigation and search-and-rescue payloads were methodically switched on and checked out. Their performance was assessed in relation to the... read more

Directions 2017: New GLONASS capabilities for users

FIGURE 2. Passive hydrogen maser.

In October 2017 we will celebrate the 35th anniversary of the first GLONASS satellite launch. Since 1982, the capabilities provided by GLONASS satellites have multiplied and the system’s ground infrastructure has expanded beyond the Russian Federation. Growing demand for satellite navigation services and increasing user requirements call for continuing modernization, which is only possible if advanced, technically complex solutions are... read more

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Directions 2017: BeiDou’s road to global service

December 6, 2016By
Li Wang

By Li Wang, Director of the International Cooperation Center, China Satellite Navigation Office An effective approach has been taken by the BeiDou Navigation Satellite System (BDS), and significant progress has been witnessed in 2016, from the aspects of launching new satellites, verifying new technologies, promoting applications and industrialization, strengthening international cooperation, and formulating fundamental policies. Construction Update. In March 2016,... read more

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Wind-speed data based on ocean surface using GNSS-R

December 6, 2016By
The TechDemoSat-1 satellite, built by Surrey Satellite Technology Ltd. (Photo: SSTL)

The National Oceanography Centre (NOC) has developed global wind speed products based on reflected GPS signals, using data from the UK TechDemoSat-1 satellite, reports Hydro International. The achievement demonstrates the potential of GNSS reflectometry (GNSS-R) to improve sampling of ocean surface winds, as well as improve weather monitoring and forecasting by complementing existing satellite measurements from scatterometers and radiometers. The... read more

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EGNOS awarded by aerospace academy

December 5, 2016By
receiving_medal_egnos-team-w

News from the European Space Agency The multi-agency team behind the ESA-designed EGNOS augmentation system — making it possible for European aircraft to safely rely on satnav signals — has received a prestigious award from France’s national aerospace academy. As our region’s own satellite-based augmentation system (SBAS), the European Geostationary Navigation Overlay Service (EGNOS) improves the precision of GPS signals over... read more

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Directions 2017: GPS navigates the future

December 2, 2016By
Col. Whitney with the Green Monster, mascot of the U.S. Air Force GPS Directorate.

I’m proud to be a part of the accomplishments of the men and women of the Space and Missile Systems Center’s Global Positioning System Directorate at Los Angeles Air Force Base in El Segundo, California. The year has been extremely challenging, but looking back on 2016, we have taken real steps forward to modernize the GPS Enterprise and the way... read more

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Galileo deals 4 of a kind

December 2, 2016By
The Kourou launch team.

An Ariane 5 heavy-lift rocket launched four full operational capability (FOC) Galileo satellites on Nov. 17, accelerating deployment of the new satellite navigation system. The rocket carried Galileo satellites 15–18 from Europe’s Spaceport in Kourou, French Guiana, into space, releasing the first pair 3 hours, 25 minutes after liftoff, while the second separated 20 minutes later. All four are at... read more

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