Global Navigation Satellite Systems Engineering, Policy, and Design
The value of the GPS SPS PS goes far beyond the specific parameters that it contains. It has a great deal of information regarding how GPS operates and ideally should be read in full (including the appendices) by everyone who works with GPS at the measurement level.
China has released four national technical standards for the BeiDou Navigation Satellite System (BDS), according to the China Satellite Navigation Office, for fields of the data format, map application, ground-based augmentation system and atomic clock.
By Inside GNSS
Inertially-aided extended coherent integration makes a GNSS receiver more sensitive to directly received signals than to reflected signals whenever the receiver is moving. 3D-mapping-aided GNSS uses predictions of which signals are NLOS to enhance the positioning algorithms. Both techniques can improve positioning accuracy in dense urban areas by more than a factor of two. This article investigates the benefits of combining them.
By Inside GNSS
By Logan Scott
The U.S. Department of Transportation’s (DoT’s) “Complementary PNT and GPS Backup Technologies Demonstration Report” released this January has some excellent data on the relative performances of various systems in timing and positioning.
By Inside GNSS
On March 3 a Galileo Performance Workshop, open to anyone interested in GNSS and led by the European GNSS Agency (GSA), will offer an in-depth analysis of the performance of the Galileo constellation and signals and how they are evaluated for users.
By Inside GNSS
A monitoring system developed through a European Space Agency (ESA)-backed project detects interference with satellite navigation signals in use at strategic or safety-critical sites.
By Inside GNSS
The European Navigation Conference and the Royal Institute of Navigation’s (RIN’s) International Navigation Conference are one and the same in 2021. They convene jointly and virtually as Navigation 2021, from November 15 to 18.
By Inside GNSS
u-blox announced the ALEX-R5, a miniature cellular module that integrates low-power wide-area (LPWA) connectivity and GNSS technology into an ultra-small system-in-package (SiP) form factor.
By Inside GNSS
GSA Executive Director Rodrigo da Costa speaks to Inside GNSS about the transition into a new European Space Program Agency, EUSPA, and the new responsibilities that will bring to his staff.
By Peter Gutierrez
Alternative PNT from low-Earth orbit (LEO) satellites is being developed or proposed by various entities. Satelles delivers a fully operational Satellite Time and Location (STL) service to back up or augment GNSS, strengthening the resilience of critical infrastructure. This article details STL’s timing synchronization performance with different types of user equipment.
The European Commission awarded two contracts for 12 satellites — 6 satellites each — for a total of EUR €1.47 billion to ThalesAleniaSpace (Italy) and Airbus Defence & Space (Germany) following an “open competition.”
By Inside GNSS
James D. (Jim) Litton, a pioneer of GPS, passed away at home with his family at his side. He was 89. Jim helped develop the earliest GPS receivers at Magnavox. He also co-founded and was CEO of NavCom, which is now part of John Deere.
By Inside GNSS
Honeywell announced that recent findings from its research labs show that its newly developed inertial sensors can deliver greater than an order of magnitude improvement in accuracy over its current tactical-grade product, the HG1930 inertial measurement unit (IMU).
By Inside GNSS
