Global Navigation Satellite Systems Engineering, Policy, and Design
Ivan Revnivykh’s life and experience encompass the far frontiers of his homeland, Russia, from the magnifi cent landscapes of the country’s Pacifi c coast to research stations in Antarctica, to the great capital city of Moscow where he lives and works today. To everything he does he brings a sense of excitement and adventure.
By Inside GNSS
Every GNSS has experienced a failure. On January 26, 2016, an error in the GPS data upload system caused incorrect data to be transmitted from the satellites on the L1 band used by most commercial GPS receivers. Th e problem was resolved within six hours, although some users experienced problems for as much as twelve hours. Th e next day, the US Air Force (USAF) released a full statement explaining that the problem was caused by ground system soft ware when one satellite was decommissioned.
By Inside GNSS
Seventeen years after federal regulators restricted a promising wireless technology to protect GPS and other spectrum users, they are being asked to loosen those limitations. Ultra-Wide Band (UWB) proponents insist the strictures are too tight and cut off their ability to innovate. In June, Robert Bosch LLC formally requested the Federal Communications Commission (FCC) do what it said it would do back in April 2002: reexamine controls on UWB that the FCC itself called “extremely conservative” when they were written. The request is not to change the rules—not just yet anyway—but for the FCC to launch a rulemaking process that could eventually lead to changes in the rules. And Bosch wants a lot of changes.
By Inside GNSS
Due to the proliferation of personal privacy devices and other jamming sources, it is imperative for safety-critical GNSS users such as airports and marine ports to be situationally aware of local GNSS interference. This article proposes and validates an enhanced method for geolocating GNSS interference sources so that jammers and spoofers can be found and disabled.
By Inside GNSS
The introduction of a new generation of mass-market chips based on multi GNSS dual frequency measurements, already being commercialized and integrated in smartphones by major manufacturers, is contributing to a new level of positioning accuracy in the mass-market location-based services.
By Inside GNSS
Gen. John E. Hyten, an officer deeply familiar with the GPS program whose testimony before Congress underscored the need to protect satellite navigation frequencies, was confirmed Thursday by the Senate to be vice chairman of the Joint Chiefs of Staff and the nation’s second highest ranking military officer.
By Dee Ann Divis
A European aviation industry alliance will deploy new-generation GNSS-based landing systems, ground-based augmentation systems or GBAS, at airports across the continent, starting this year and gaining momentum in 2020. The GBAS Alliance includes airlines and aircraft manufacturers who will complementarily equip their planes with GBAS reception equipment. GBAS is recognized as a supplement to and future replacement of instrument landing systems (ILS).
By Inside GNSS
Juniper Systems today announced the release of the Geode GNS2 Sub-meter GPS Receiver. This new release of the Geode now features connectivity with a range of iPhone and iPad devices providing users with an even more versatile and powerful tool, according to the company.
By Inside GNSS
Seventeen years after federal regulators restricted a promising wireless technology to protect GPS and other spectrum users, they are being asked to loosen those limitations. Ultra-Wide Band (UWB) proponents insist the strictures are too tight and cut off their ability to innovate.
By Dee Ann Divis
Trimble announced new capabilities to its Real-Time Network (RTN) portfolio—the Trimble® Pivot™ Platform and the Trimble Alloy™ Global Navigation Satellite System (GNSS) reference receiver—that will enable operators to continue to meet the ongoing demand from surveyors, mapping professionals and precision farmers for accurate, reliable corrections derived from real-time networks.
By Inside GNSS
WASHINGTON – Today, the GPS Innovation Alliance (GPSIA) announced the addition of four national organizations representing a variety of sectors: The American Council of the Blind (ACB), the U.S. Geospatial Executives Organization (U.S. GEO), NENA: The 9-1-1 Association, and the Subsurface Utility Engineering (SUE) Association.
By Inside GNSS
The basis of all precision positioning and navigation is precision timing. Timing comes first. GPS Time is defined on the basis of a set of atomic clocks orbiting aboard the satellites and on the ground in monitoring stations; similarly for the other GNSS systems.
By Inside GNSS
The U.S. National Aeronautic and Space Administration (NASA) has activated an orbiting ultra-precise atomic clock orbiting aboard a spacecraft provided by General Atomics Electromagnetic Systems. If the clock performs as well in space as it has in the lab, losing only one second every 10 million years, the technology could enable far-reaching deep space missions—and improve the accuracy of GNSS timing and positioning.
By Inside GNSS
