Global Navigation Satellite Systems Engineering, Policy, and Design
GNSS positioning is strongly challenged in urban canyon areas. The signal reflection induces multipath and non-light-of-sight (NLOS). These signal blockages and reflections are caused by the obstacles of signal transmission between the satellites and receiver.
By Weisong Wen, Li-Ta Hsu
China is now mass producing atomic clocks that are just 17 millimeters thick, according to the Xinhua News Agency.
By Inside GNSS
Parachute safety solution manufacturer Drone Rescue Systems GmbH supports the European research project Formation flight for in-Air Launcher 1st stage Capturing demonstration (FALCon). Under the leadership of DLR, research is being conducted on how launch vehicles can be returned to the launch site as efficiently as possible for re-use.
By Inside GNSS
The European GNSS Agency (GSA) is looking for experts with a high level of expertise and professional experience in navigation satellite systems to assist it with tasks related to the implementation of the Fundamental Elements funding mechanism.
By Inside GNSS
Europe has set out to abolish the national patchwork for drone operations. Faced with different drone rules all over the continent, the legislative bodies of the European Union have been very busy lately.
The second satellite to join the constellation that forms the European Data Relay System (EDRS) was launched by Arianespace on August 6, at 21:30 CEST (19:30 UTC). The satellite was launched on board an Ariane 5, together with a second passenger, Intelsat 39, from Europe’s Spaceport in Kourou, French Guiana.
By Inside GNSS
Spectrum regulators are considering a request to modify tough restrictions on devices and systems relying on Ultra-Wideband (UWB) technology, an approach to using frequencies that skips across wide swaths of spectrum instead of confining its signals to distinct, narrower bands.
By Dee Ann Divis
Ligado Networks is pushing spectrum regulators to make a decision on its request to allow satellite frequencies near the GPS band to also be used for terrestrial 5G networks.
By Dee Ann Divis
China’s Xi’an Satellite Control Center recently completed a health check of more than 10 BeiDou-2 navigation satellites using a data system that slashed the analysis time from 10 hours to five minutes.
By Dee Ann Divis
Airbus has been selected by the European Space Agency (ESA) to build the European component of the SMILE satellite (Solar wind Magnetosphere Ionosphere Link Explorer). SMILE will be the first joint satellite mission between ESA and the Chinese Academy of Sciences (CAS), following on from the success of the Double Star / Tan Ce mission which flew between 2003 and 2008.
By Inside GNSS
The European GNSS Agency (GSA) and the Horizon 2020 Space NCP Network (COSMOS2020plus) are jointly organizing the Horizon 2020 Space Information Day and Brokerage Event at the GSA’s headquarters in Prague, Czech Republic, on September 12-13.
By Inside GNSS
The latest update to Racelogic’s SatGen GNSS simulation software for PC now incorporates Galileo RF simulation.
Designed to create a GNSS RF I&Q or IF data file based on a user-generated trajectory file, the updated software can now accurately simulate the European Galileo GNSS satellite constellation alongside existing GPS, GLONASS and BeiDou RF signal generation.
By Inside GNSS
Program managers have defended as useful redundancy what many consider an expensive system overbuilt to accommodate the political expectations of the large number of Galileo member-states.
By Glen Gibbons
