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Inside GNSS magazine • Volume 11 Number 3

May/June 2016

Online News, Articles, and Features

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Cover Story
Working Papers

GNSS Evolutions for Maritime

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.

Features
Human Engineering

Boubeker Belabbas' Compass Points

Brussels View

The "Brussels View" from Prague

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.

Washington View

Military GPS Receiver Advances Could Help Trim Satellite Costs

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.

Human Engineering

Boubeker Belabbas: At Home in the World

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.

Articles
Technical Article

Listening for RF Noise

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.

Technical Article

Inter-Signal Correction Sensitivity Analysis

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.

Columns & Editorials
Thinking Aloud

Re-Baseline This!

The Way of Life for GPS

What in other quarters is known as moving the goalposts has become a way of life for GPS.

GNSS Hotspots

GNSS Hotspots

Electronic Throwaways, Space X Wins, Drones at Sea and Shaking It Up

Thought Leadership Series

GNSS Antennas

The Link Between Satellites and Receivers

Challenging environmental conditions, multiplying signals and systems, and proliferating applications place higher demands on this workhorse component.

360 Degrees
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