Global Navigation Satellite Systems Engineering, Policy, and Design
Working Papers explore the technical and scientific themes that underpin GNSS programs and applications. This regular column is coordinated by Prof. Dr.-Ing. Günter Hein, head of Europe’s Galileo Operations and Evolution.
By Inside GNSS
After three years in Chapter 11, the company whose planned wireless broadband system threatened to overload GPS receivers across the United States is preparing to emerge from bankruptcy.
By Dee Ann Divis
College Park Marriott Hotel and Conference CenterThe 2015 Space Situational Awareness (SSA) Forum will be held at the College Park Marriott Hotel and Conference Center in Hyattsville, Maryland, U.S.A. on May 12-13, 2015.
By Inside GNSSIt’s 10 p.m. somewhere over the vast oceans that comprise three-quarters of the Earth’s surface. Do you know where your airplane is?
Well, you could, but maybe you don’t.
The anniversary of the disappearance of Malaysia Airlines flight MH370 came and went in March with the fate of the Boeing 777 still unknown.
It didn’t have to happen.
By Inside GNSS
Dr. John Fulton, Ohio State UniversityNowhere has the fact that GNSS can guide things besides military weapons and transport manifested itself more profoundly than in agriculture.
While Google and automotive manufacturers struggle to figure out how to put autonomous vehicles on the highway, farmers have been using GNSS for well over a decade to guide equipment through their fields — along with a host of other ag-related, site-specific applications.
Indeed, GNSS — along with an array of other high-tech resources — is transforming agriculture at an accelerating rate.
By Inside GNSS
Equations 1 – 11Q: How does a GNSS receiver estimate velocity?
A: Stand-alone single-frequency GNSS receivers represent the largest slice of the commercial positioning market. Such receivers operate mainly in single point position (SPP) mode and estimate velocity either by differencing two consecutive positions (i.e., approximating the derivative of user position) or by using Doppler measurements related to user-satellite motion.
By Inside GNSS
Arlington, VirginiaNOAA’s National Geodetic Survey (NGS) Geospatial Summit will be held at the Crystal City Hilton in Arlington, Virginia on April 13-14, 2015.
Registration is now open. Early registration ends March 13, 2015.
NGS will be hosting three events, each one providing a venue for NGS to share information about its products and services as well as hear from its customers across the public and private sectors.
By Inside GNSS
Kauna’oa Bay and Beach, with Mauna Loa in the backgroundThe 2nd IEEE International Symposium on Inertial Sensors and Systems will be held at the Hapuna Beach Prince Hotel on the Big Island of Hawaii on March 23 – 26, 2015.
Online registration is open.
This event covers the latest developments in the area of modern inertial sensors and emerging applications.
Invited Speakers:
By Inside GNSS
The annual Space Weather Workshop will take place on April 13 – 17 2015 at the Millennium Hotel in Boulder, Colorado, U.S.A.
Registration will be open soon.
This meeting will bring together customers, forecasters, vendors, government agencies and researchers of space weather information.
By Inside GNSS
Lisbon CastleThe INSPIRE – Geospatial World Forum 2015 and industry exhibition will be held at the Lisbon Congress Center in Lisbon, Portugal on May 25 – 29, 2015.
The call for abstracts has closed. Early registration is open until March 10, 2015. Spot registration will be available.
This year’s theme is "CONVERGENCE: Policies + Practices + Processes via PPP" Plenary and thematic sessions include:
By Inside GNSS
Washington D.C. at sunsetThe eleventh annual GEOINT Symposium and exhibition will take place on June 22 – 25, 2015 at the Walter E. Washington Convention Center in Washington D.C., U.S.A.
Registration for the GEOINT Symposium will open in February 2015.
The event will feature keynote speakers, breakout sessions, and provide attendees an opportunity to learn from leading experts, share best practices, and uncover the latest developments from government, military and private-sector leaders.
By Inside GNSS
One of 12 magnetograms recorded at Greenwich Observatory during the Great Geomagnetic Storm of 1859
1996 soccer game in the Midwest, (Rick Dikeman image)
Nouméa ground station after the flood
A pencil and a coffee cup show the size of NASA’s teeny tiny PhoneSat
Bonus Hotspot: Naro Tartaruga AUV
Pacific lamprey spawning (photo by Jeremy Monroe, Fresh Waters Illustrated)
“Return of the Bucentaurn to the Molo on Ascension Day”, by (Giovanni Antonio Canal) Canaletto
The U.S. Naval Observatory Alternate Master Clock at 2nd Space Operations Squadron, Schriever AFB in Colorado. This photo was taken in January, 2006 during the addition of a leap second. The USNO master clocks control GPS timing. They are accurate to within one second every 20 million years (Satellites are so picky! Humans, on the other hand, just want to know if we’re too late for lunch) USAF photo by A1C Jason Ridder. 
Detail of Compass/ BeiDou2 system diagram
Hotspot 6: Beluga A300 600ST
1. SLAVE TRADE
Bangkok, Thailand
These days getting the United States, Russia, China, and Europe to agree on a common policy seems to be an increasingly rare event.
That’s why the long-standing comity among system operators in the GNSS sphere is particularly notable and welcome. “Interoperable and compatible” is the first principle espoused by the four nations under the aegis of the International Committee on GNSS.
By Dee Ann Divis
