|
|
Inside GNSS magazine • Volume 4, Number 5
September/October 2009
Online News, Articles, and Features
|
Cover Story
Technical Article
A Secure Civil GNSS for Today
Sherman Lo, David De Lorenzo, Per Enge,
Stanford University and Zanio, Inc.,
Dennis Akos, University of Colorado,
Paul Bradley, DAFCA, Inc.
Stanford University researchers teamed with a provider of on-chip,
in-system validation technology to develop new signal authentication
software that uses hidden attributes fundamental to the GPS satellite
broadcast, rather than predictable characteristics of the GPS signal.
These attributes are cross-compared between receivers to authenticate
received signals and the location solutions they generate.
Articles
Technical Article
GNSS-R Data Processing Software and Test Analysis
Dongkai Yang, Yanan Zhou, and Yan Wang
Beihang University
Authors from a leading Chinese university describe how reflected GNSS signals can be used in sea-wind retrieval, seawater salinity detection, ice-layer density measurement and other remote sensing applications. They introduce the GNSS-R concept, demonstrate the characteristics of the GPS reflected signal, and describe their data-processing method for exploiting the reflected signals.
Technical Article
A Recipe for a Multi-System, Multi-Frequency GNSS Receiver
Cillian O’Driscoll, Daniele Borio, Mark Petovello, Tom Williams and Gérard Lachapelle
Position, Location And Navigation (PLAN) Group, Department of Geomatics Engineering, University of Calgary
The step-by-step design of a modular software GNSS receiver developed at the University of Calgary. The article examines challenges, trade-offs, results, and next steps. The authors describe how the PLAN software receiver worked as a signal-monitoring tool to analyze the L5 signal broadcast by GPS satellite SVN 49.
Series
Kai Borre
In this installment of the series, the author uses Matlab to illustrates aspects of aviation navigation using EGNOS signals to augment GPS.
Columns & Editorials
Thinking Aloud
Enlarging the GNSS pie is better than fighting over the size of the pieces.
Glen Gibbons
It's hard to imagine that 20 years can embrace nearly the entirety of the
public presence of a phenomenon such as the Internet or GNSS.
GNSS Solutions
Columnist Mark Petovello with Brad Badke, Lepinsy Chanthalansy, and Aboelmagd Noureldin
Working Papers
Isabelle Kraemer and Bernd Eissfeller,
Institute of Geodesy and Navigation,
Federal Armed Forces University
Munich
More and more mobile devices integrate GNSS —and this increases the pressure to improve positioning capabilities indoors, in urban canyons and other difficult environments. Working Papers examines a novel use of peer-to-peer transfer of position information that combines GNSS and dead reckoning technologies with Bluetooth communications to assist positioning indoors.
GNSS Hotspots
GNSS data points and factoids to amuse and inform.
Eliza Schmidkunz
GNSS data points and factoids to amuse and inform.
Reviews
Global Positioning System: Signals, Measurements, and Performance, Second Edition, by Pratap Misra and Per Enge
Reviewed by František Vejražka,
Czech Technical University
Second edition adds new information with didactical mastery and good literary sense.
Introduction to GPS: The Global Positioning System, Second Edition, by Ahmed El-Rabbany
Reviewed by Dr. Giancarlo Varacalli,
Italian Space Agency
GPS theory, hot topics clearly discussed without formulas or figures.
Global Navigation Satellite Systems: GPS, GLONASS, Galileo and More, by Bernard Hofmann-Wellenhof, Herbert Lichtenegger and Elmar Wasle
Reviewed by Chris Rizos,
University of New South Wales
Authors of well-known GPS books address GNSS in a new textbook series.
360 Degrees
Industry View
New Products
|
|
|
GNSS News
Copyright © Gibbons Media & Research LLC. All rights reserved.