Global Navigation Satellite Systems Engineering, Policy, and Design
The third GNSS Raw Measurements Taskforce Workshop will take place on June 26, 2019 at the European Global Navigation Satellite Systems Agency (GSA) Headquarters in Prague. The objective of the workshop is to share the Task Force member`s experience and progress around the use of raw measurements within Android devices.
By Inside GNSS
New Board Designation Expected This Fall
The leading U.S. panel of satellite navigation experts, the National Space-Based Positioning, Navigation, and Timing Advisory Board (“PNT Advisory Board”) opened its June meeting with a renewed charter, a new chairman and seven new members.
By Dee Ann Divis
The director of the Department of Defense’s new Space Development Agency (SDA) said Friday that one of his priority projects is to create an alternate GPS capability using frequencies different from those of the current constellation.
By Dee Ann Divis
[Editor’s Note: This article was written and submitted by Mark Crews and John Betz.]
With the launch of the first next-generation GPS III satellite, GPS III Space Vehicle 01 (GPS III SV01), on December 23, 2018, the Global Positioning System (GPS) took a major step in modernizing technology and capability. The U.S. Air Force has continually improved GPS since the launch of the first GPS Block I satellite in 1978, and this ongoing modernization has provided new signals, greater accuracy, and increased robustness for civil and military users. After the first 10 GPS III satellites are launched over the next few years, up to 22 GPS III Follow-on (GPS IIIF) satellites will provide yet another step increase in GPS capabilities.
By Inside GNSS
I read with great enthusiasm Dee Ann Divis’ article New Chimera Signal Enhancement Could Spoof-Proof GPS Receivers. Logan Scott is one of the brightest people I know, and I very much enjoyed his presentation about Chimera last week at the National PNT Advisory Board’s public meeting in Alexandria, Virginia.
By Dana A. Goward
Passengers stranded at airports is not an uncommon occurrence, but when weather does not appear to be an issue, anxious travelers can get restless searching for answers.
Over the last day or two, a number of U.S. flights were canceled as aircraft were grounded and passengers were left scratching their heads.
By Stan Goff
Location privacy is on the minds of lawmakers from both parties with provisions about disclosure, data collection and sharing in more than half a dozen bills. There is also language in a House appropriations bill nixing the use of federal funds for GPS tracking.
By Dee Ann Divis
An increasing number of applications require accurate, reliable, and traceable signals for time and synchronization. Key fields of application include banking and finance, telecom networks and electricity grids. GMV’s WANTime is a new time service for the city of Madrid, Spain, distributed using the White-Rabbit network protocol over optical fiber. A pilot customer of the service is currently the Madrid Stock Exchange (Bolsa de Madrid), connected to GMV’s datacenter by a network link of around 50 kilometers.
By Inside GNSS
The House Appropriations Committee approved all but $10 million of the $1.758 billion requested by the White House for the GPS program.
By Dee Ann Divis
In the past few months, there have been articles in the press providing information and misinformation in advance of the GPS week rollover that occurred on April 6. Readers were warned to retire obsolete receivers, update software, check with manufacturers, and even perform testing of critical devices.
By John W. Betz
Curtis Hay is a Technical Fellow at General Motors, where he develops precise GNSS and map technology for safe and reliable autonomous and semi-autonomous vehicles. He has appeared on many international stages, but while he very much enjoys traveling and meeting people in faraway lands, both for work and for pleasure, he knows where home is.
By Peter Gutierrez
Improvements to GPS performance are often incremental, achieved by squeezing better performance out of existing systems with clever tweaks, smarter analysis and sharper receivers. Then again, every once in a while, there’s a huge leap in the capabilities of the system itself—an advance so big that it makes you appreciate all over again the elegant wizardry of satellite navigation.
By Dee Ann Divis