Global Navigation Satellite Systems Engineering, Policy, and Design
Philip Dunne, UK Defense Minister for Equipment, Support, and Technology. Wikimedia Commons photoThe United States and United Kingdom announced today (January 17, 2013) that the British government would end its efforts to obtain patent or intellectual property (IP) rights related to GPS.
By Inside GNSS
GNSS positioning, navigation and timing applications are vulnerable to malicious, accidental and space weather threats – but what can be done?
Rear Admiral Nick Lambert will keynote this one-day seminar on threat detection and mitigation techniques for civil use at the National Physical Laboratory, Hampton Road, Teddington on February 13.
By Inside GNSS
In 2013, the annual European Navigation Conference and industry exhibition will be organized by the Austrian Institute of Navigation (OVN) and will take place at the Austria Center Vienna from April 23 through April 25. The lectures and sessions will be held in English.
The theme is Navigation – Expanding Our Horizons
By Inside GNSS
Do we need performance specs for GNSS user equipment design? For a long time, the signal-in-space interface guidelines provided enough technical guidance. But times have changed.
Over the past two years, the effort by LightSquared to persuade the FCC to allow it to operate high-powered terrestrial transmitters in frequencies adjacent to GPS focused attention on potential vulnerabilities of GNSS user equipment.
By Inside GNSS
The Institute of Navigation’s 2013 International Technical Meeting will take place January 28, 29 and 30 at the Catamaran Resort Hotel on Mission Bay in San Diego, California.
Stanford’s Sherman Lo will moderate the plenary session, "Exploring the Frontiers of Navigation: Unique and exciting new uses of navigation technologies."
The 120 technical session papers address:
By Inside GNSS
Conceptual design of ULTRA (ultra low-cost PRS receiver)When European leaders first took up the idea of creating their own GNSS system nearly 20 years ago, they held up the concept of civilian control as a crucial differentiator from existing services operated by national military establishments.
As Galileo nears its operational phase, that principle may manifest itself in a surprising form: the opportunity to offer a range of security-oriented positioning and timing solutions in place of the all-or-nothing alternatives on encrypted services maintained by defense agencies.
By Inside GNSS
Coming nearly full circle and yet ending up in a new place with a new name describes the peculiar fortunes of the European GNSS Agency, an unlikely fate perhaps reflected most clearly in its continued use of its predecessor’s acronym, GSA.
Five years ago when Europe’s GNSS program abandoned its seemingly misconceived and now roundly condemned effort to forge a public-private partnership (PPP) to develop Galileo, the original GSA — the Galileo Supervisory Authority — appeared orphaned, bereft of purpose and patrons.
By Inside GNSS
The accompanying figure shows the acquisition results of the FM3 Galileo satellite (PRN 11) E1b data channel, as computed by the NAVigation Signal Analysis and Simulation (NavSAS) group of the Politecnico di Torino/Istituto Superiore Mario Boella (ISMB) in Italy. The upper plot shows the search space along ±7 kHz Doppler frequency, while the lower one shows the search space along 4 millisecond code delay. The coherent integration time used to obtain this search space was 4 milliseconds, coupled with 11 noncoherent accumulations.The third Galileo in-orbit validation (IOV) satellite, also known as Flight Model 3 (FM), began transmitting signals last week, and the FM4 spacecraft, like the FM3 launched on October 12, is expected to come on-line soon — providing the theoretical capability of 3D positioning using solely satellites of Europe’s GNSS system.
By Inside GNSS
ION GNSS 2012Companies who exhibit at the Institute of Navigation GNSS conference next September will have longer exhibit hall hours to work the floor – but fewer days to do so – at the 2013 event in Nashville, Tennessee.
Based on feedback from exhibitors, ION will eliminate the Friday hours for the industry show and increase the Wednesday and Thursday hours next year.
By Inside GNSS
GIOVE-A mated with Fregat launcher upper stage. ESA photoAn experimental GPS receiver, built by Surrey Satellite Technology Limited (SSTL), has successfully achieved a GPS position fix at a 23,300-kilometer altitude — the first position fix above the GPS constellation on a civilian satellite, according to the company.
SSTL’s SGR-GEO receiver is collecting data that could help the company to develop a receiver to navigate spacecraft in geostationary Earth orbit (GEO) or even in deep space.
By Inside GNSS
This is, as they say in Hollywood, a wrap.
The final issue of our seventh year heads off to the printer. And tomorrow I will point my car north and west, returning as generations of Americans have done over the centuries to the family farm, the “home place,” for Thanksgiving.
Because this is the season for gathering in and counting up. For gratitude at what we have received in the year past, and for those untoward things that we have avoided.
By Inside GNSS
The 2012 AGU fall meeting will take place from December 3 through December 7 at the Moscone Center in San Francisco, California.
Keynote speakers include Ira Flatow, host of National Public Radio’s Science Friday program; Dr. Surbra Suresh, director of the National Science Foundation; and Sir Robert Watson, whose career includes stints at JPL, NASA, the World Bank and now chief scientific advisor to the UK Department for Environment, Food and Rural Affairs;
By Inside GNSS
The International Civil Aviation Organization, a specialized agency of the United Nations, will hold its 12th Air Navigation Conference (AN-Conf/12) at the ICAO headquarters assembly hall in the Quartier National of Montreal from November 19 through November 30, 2012. The conferences take place every 10 years.
By Inside GNSS
