Global Navigation Satellite Systems Engineering, Policy, and Design
The U.S. Air Force awarded Lockheed Martin the GPS Control Segment Sustainment II (GCS II) contract to continue to sustain and further modernize the Global Positioning System (GPS) satellite constellation’s ground control system through 2025. This is the follow-on contract to Lockheed Martin’s current GCS contract awarded in 2013.
By Inside GNSS
Veteran journalist, consultant and educator Abe Peck has joined Autonomous Media as Executive Editor of Inside Unmanned Systems and Inside GNSS. The magazines cover autonomous vehicles from ground to air to sea, and the satellite navigation that empowers them.
By Inside GNSS
Manassas, Virginia, January 8, 2019–Due to the extended impasse between U.S. Congressional leaders and the White House that has created a partial U.S. government shutdown, the Institute of Navigation (ION) has decided to postpone the Cognizant Autonomous Systems for Safety Critical Applications (CASSCA) Conference scheduled to take place January 28-29, 2019 at the Hyatt Regency Reston in Reston, Virginia.
By Inside GNSS
An Israeli firm is introducing a technology to detect the spoofing of GPS and other satellite navigation signals that is packaged into a device so small it can be integrated into existing receivers for drones, ships and autonomous vehicles — and, soon, maybe even cell phones.
By Dee Ann Divis
Though 2019 is brand new there are a host of GPS-related issues carrying over from 2018. This is one in a series of stories on satellite navigation issues on the table as the new year gets underway.
Virginia-based Ligado Networks and its predecessor firm LightSquared have been pushing since 2011 to change the rules governing how its spectrum can be used — a move essential to building a ground-based communications network that navigation experts insist will interfere with GPS receivers.
By Dee Ann Divis
At approximately 12,550 miles (20,200 kilometers) up … turn left. You have arrived at a new era for the Global Positioning System (GPS).
A major milestone in the U.S. Air Force’s plan to bring new technology and capabilities to the GPS constellation, the first Lockheed Martin-built GPS III satellite began “talking” with engineers and operators from ground control, as planned, following its successful launch Sunday morning.
By Inside GNSS
The Federal Communications Commission — after a multi-agency process that started in October 2013 — approved on November 15 of this year a request from the European Union that Galileo signals be allowed to be received in the United States.
By Dee Ann Divis
BLUEGNSS is a project developed in the framework of the Horizon 2020 (H2020) program involving four ANSPs of different European countries (Italy, Cyprus, Greece, and Malta) plus one industrial partner, IDS (Ingegneria Dei Sistemi). The project objective is to harmonize the implementation of PBN approach operations among the BLUE-MED FAB States. This article provides an overview of the phases required to reach this goal and focuses on GNSS performance assessment as recommended by ICAO.
By Inside GNSS
Snapshot positioning is a technique for determining the position of a Global Navigation Satellite System (GNSS) receiver using only a very brief interval of the received satellite signal, where the sampling time can be more than 100 milliseconds (ms) or even down to as little as 2 ms. In comparison, a conventional GNSS receiver may require anywhere between a few and tens of seconds of signal tracking before it is able to compute its first position.
By Mark Petovello
This article — Part 1 was published in the September/October 2018 issue — presents the authors’ experience in setting up an airborne pseudolite (UAVlite) with the needed ground-based infrastructure to perform code and phase ranging performance analysis. UAVlites transmit GNSS-like signals free from any local transmitter multipath (in contrast to ground-based transmitters) and can in principle be localized in real-time through a synchronized network of ground stations which may also broadcast the UAVlite positions in real-time.
By Günter W. HeinNovAtel’s Annual Journal of GNSS Technology Solutions and Innovation
