An Incremental Approach
The use of satellite-based augmentation system (SBAS) corrections in maritime receivers is currently unregulated. This article discusses mid-term and long-term strategies for development of a dedicated standard that combines SBAS with differential GNSS services to provide a resilient positioning, navigation, and timing capability for maritime applications, including e-Navigation.
Last October, the European GNSS Agency (GSA) Administrative Board reelected Carlo des Dorides as executive director of the GSA, giving him a second — and final — four-year term in charge of this key agency responsible for supporting the effective operation, maintenance, and security of Europe’s satellite navigation systems. We met with him recently at the GSA office in Prague to learn how he plans to see out his mandate.
Advanced military receivers using the sort of modern multi-channel, multi-constellation capabilities already available commercially, could enable the Air Force to focus its anti-jam efforts on the ground, simplifying future GPS satellites and lowering their cost.
This expert in aerospace mechanics and safety-critical GNSS applications grew up in a city of wine, works in a city of beer ... but started out in the land of mint tea.
An Analysis of Pre-Despreading GNSS Interference Detection Techniques
GNSS receivers are vulnerable to continuous wave and chirp interference signals. This article compares the performance of interference-detection methods in terms of detection capability, detection latency, sensitivity to interference power, and computational and hardware complexity.
Aperture-Dependent Delays Induced by Antenna Anisotropy in Modernized GPS Dual-Frequency Navigation
GPS specification documents provide the new modernized dual-frequency correction algorithm that uses inter-signal corrections to align all new GPS signals with the dual L1 and L2 PY ionosphere-free reference. This article offers insights into how L1 and L2 and L1 and L5 dual-frequency alignment actually works when satellite antenna anisotropy is present and will provide receiver designers the additional insights needed for their specific application markets.
The Way of Life for GPS
What in other quarters is known as moving the goalposts has become a way of life for GPS.
Electronic Throwaways, Space X Wins, Drones at Sea and Shaking It Up
The Link Between Satellites and Receivers
Challenging environmental conditions, multiplying signals and systems, and proliferating applications place higher demands on this workhorse component.