Global Navigation Satellite Systems Engineering, Policy, and Design
The Federal Railroad Administration has nearly $245 million available to support railway infrastructure and safety improvements including the installation of Positive Train Control and rail-related research.
By Dee Ann Divis
The second Lockheed Martin-built GPS III space vehicle (GPS III SV02)—also known as Magellan—was recently encapsulated within its protective fairings in preparation for Thursday’s scheduled launch. GPS III will launch tomorrow from Space Launch Complex-37 (SLC-37) at Cape Canaveral Air Force Station, Florida.
By Stan Goff
As the deal/no-deal Brexit conundrum continues to roil UK politics, the British government has quietly sounded out strategic partners in the so-called “Five Eyes” security alliance for help in launching its own satellite positioning system. Due to leave the European Union on October 31, the UK faces a lockout from the continent’s Galileo system and services, most crucially its–as yet unrealized–Public Regulated Service (PRS), an encrypted navigation signal for governmental-authorized users and sensitive applications, that is, the military.
By Inside GNSS
Air Force Space Command announced its intent this week to award Raytheon a sole source contract to support the new GPS ground system though the wording of the announcement left some question as to when delivery of that system would take place.
By Dee Ann Divis
The U.S. Air Force’s Rocket Systems Launch Program Office, part of the Space and Missile Systems Center’s Launch Enterprise, last week released a solicitation for the Orbital Services Program-4 Indefinite Delivery/Indefinite Quantity contract.
By Inside GNSS
The Air Force’s Space and Missile Systems Center recently awarded Maxar Technologies a firm fixed-price delivery order under the Hosted Payload Solutions Indefinite Delivery/Indefinite Quantity contract. The National Aeronautics and Space Administration will fund the contract, which will commercially host NASA’s Tropospheric Emissions: Monitoring of Pollution, or TEMPO instrument.
By Inside GNSS
NovAtel, part of Hexagon’s Positioning Intelligence division, introduced a new addition to its corrections portfolio today. The new service, TerraStar-X, is available for use in precision agricultural applications across the Midwestern United States.
By Inside GNSS
Today’s vehicular navigation systems couple global navigation satellite system (GNSS) receivers with an inertial navigation system (INS). Low Earth orbit (LEO) satellite signals are a particularly attractive INS aiding source in GNSS-challenged environments.
By Zak Kassas et alia
Spectrum regulators have denied a request for an extension to file comments on a petition to rewrite the rules governing Ultra-Wide Band (UWB), a wireless technology that spreads the content of a signal across hundreds of megahertz of frequencies and poses a potential interference risk to GPS.
By Inside GNSS
GNSS positioning is strongly challenged in urban canyon areas. The signal reflection induces multipath and non-light-of-sight (NLOS). These signal blockages and reflections are caused by the obstacles of signal transmission between the satellites and receiver.
By Weisong Wen, Li-Ta Hsu
Today’s vehicular navigation systems couple global navigation satellite system (GNSS) receivers with an inertial navigation system (INS). Low Earth orbit (LEO) satellite signals are a particularly attractive INS aiding source in GNSS-challenged environments.
By Zak Kassas et alia GNSS positioning is strongly challenged in urban canyon areas. The signal reflection induces multipath and non-light-of-sight (NLOS). These signal blockages and reflections are caused by the obstacles of signal transmission between the satellites and receiver.
By Weisong Wen, Li-Ta Hsu
Today, more and more integral fields of application including banking and finance, telecom networks and electricity grids, rely heavily on accurate, reliable, and traceable signals for time and synchronization.
By Ricardo Píriz, et alNovAtel’s Annual Journal of GNSS Technology Solutions and Innovation
