Global Navigation Satellite Systems Engineering, Policy, and Design
Falls Church, Virginia, c. 1861NavtechGPS Fall Mission Critical GNSS Training Seminars 2015 will take place at the Westin Tysons Corner Hotel in Falls Church, Viginia (Washington, D.C. area), November 2-6, 2015.
Special hotel rate if booked by October 12, 2015.
Course 556 starts on November 2, 2015. Courses 122 and 346 will start on November 3, 2015.
By Inside GNSS
A new federal watchdog report released yesterday (September 9, 2015) questions the outlook for the still-developing GPS ground control system saying the Pentagon may not fully understand the true cause of ongoing problems in a program where further delays “may likely pose significant risks to sustaining the GPS constellation and delivering GPS capability.”
By Inside GNSS
The incorporation of GNSS and inertial technologies is helping drive an explosion of systems development and applications of unmanned systems. On Tuesday, September 29, Inside GNSS and NovAtel will present a FREE 90-minute web seminar showcasing some of these applications, including the use of remote sensing technologies to assess pest populations in commercial crops and to conduct infrastructure inspections, with the aid of air and ground vehicles.
Register now for Tuesday, September 29, 2015: 9 am PDT
By Inside GNSS
Federal officials have released a draft of their plan to determine the amount of interference satellite navigation receivers can tolerate from users in neighboring frequencies. The tests, proposed after the Federal Communications Commission (FCC) froze a controversial wireless broadband system, would accelerate research on GNSS receivers that process signals from multiple satellite constellations.
By Inside GNSS
John and his wife, Cindy.With an imposing 6’2” physique and a disarming grin, John Raquet rises above the crowd. To colleagues he’s a top-flight engineer and university professor, and director of the Air Force Institute of Technology (AFIT) Autonomy and Navigation Technology Center. But he is also a former all-star basketball player, a preacher, sometime soccer coach, former military officer, and, most definitely, a family man.
By Inside GNSS
Ubiquitous location-aware mobile devices, mainly GPS-enabled smartphones, have led to a boom in location-based services (LBS), which have been revolutionizing businesses and lifestyles. Common uses of LBSs include asset tracking, location-based advertising, emergency roadside service, turn-by-turn navigation, and real-time traffic & road information sharing.
By Inside GNSS
It is by now well known that GNSS-based localization in built-up urban environments can be extremely inaccurate. This is a fundamental problem that hardware enhancements cannot solve.
A GNSS receiver estimates 3D location and timing from pseudoranges from four or more satellites, assuming that these pseudoranges correspond to direct line-of-sight (LOS) paths from each satellite. In urban canyons, however, the signal from a satellite to the receiver suffers from multipath propagation and shadowing.
By Inside GNSS
A GNSS single-antenna system can be compared to a single-pixel camera. Electromagnetic waves traveling 20,000 kilometers from every overhead direction can reach us. Yet once at the antenna, this diverse set of information is collapsed into a single magnitude and phase value, then sent off to the receiver so that value can be extracted.
By Inside GNSS
Most folks look to a new year as an opportunity for fresh starts and new projects. For the GPS community, however, the October 1 start of the 2016 federal fiscal year (FY16) will likely be more about the hangover — that is, the issues that are hanging over into the next 12 months, unresolved.
At the top of that list of unfinished business are two system decisions: a go/no-go determination on whether the United States will build eLoran as the U.S. backup to GPS and deciding whether or not to choose a new contractor for the GPS III program.
By Dee Ann Divis
The GNSS User Meet 2015 will be jointly hosted at the ISRO Satellite Centre in Bengaluru by the Indian Space Research Organisation (ISRO) and the Airports Authority of India on the theme, “Towards Self Reliance in Satellite Navigation."The technical program will include plenary talks, paper presentations, poster sessions, and panel discussions.
Participation is invited from the GNSS user community, including various government departments, academia, GNSS receiver manufacturers, research laboratories, and so forth.
By Inside GNSS
The U.S. Army has adopted PreTalen Ltd’s PANACEA as its principal test asset supporting the Army’s positioning, navigation, and timing (PNT) System of Systems Architecture (SoSA) testing of GPS receivers.
By Inside GNSS
Europe’s latest Galileo satellites are fully fueled and ready to be attached to the upper stage of the Soyuz rocket that will carry them into space next month.
Galileo satellites 9 and 10 are due to launch at 02:08 GMT on September 11 (04:08 CEST; 11:08 p.m. local time, September 10) from Europe’s Spaceport in French Guiana.
By Inside GNSS
LightSquared’s proposed GPS receiver tests are relying on an outdated standard of GPS accuracy, a choice some experts suggest is a maneuver aimed at dramatically lowering the bar the would-be wireless broadband company has to meet for showing noninterference to GPS signals.
By Inside GNSS
