Exploring the German Aerospace Center
The German Aerospace Center at Oberpfaffenhofen is the national space agency’s Center of Excellence for Satellite Navigation — and a key player in Europe’s Galileo operations. Inside GNSS visited recently and discovered why: quadrotors, GBAS demonstrator, the Galileo Control Center, advanced GNSS receivers, and the world’s largest, slow-motion Tilt-a-Whirl.
Why we should stop taking GNSS for granted, start worrying about signal failure and malicious jamming, and do something about it!
For all its remarkable
capability and accomplishments, the Global Positioning System —and, by extension, all GNSS
— appear increasingly vulnerable to malicious jamming. A UK radionavigation
expert outlines the hazards, field test results, and a possible remedy
enhanced Loran. Last is a PNT consulting engineer and former head of the
Radio-Navigation Group at the University of Wales.
GNSS/Intertial-Aided Location and Mapping Indoors
Imagine walking into a new place — a shopping mall or an office
building — wandering around for 20 minutes or so, and coming out with a
map of the facility that others could use to navigate through it — say,
a fire rescue crew or someone looking for an office suite. A team of
researchers at the German Aersopace Center are working on a
“walk-about” solution that uses GPS to initialize the beginning of the
traverse and tie the position data to an absolute coordinate frame. Foot-mounted inertial sensors increase the map accuracy when a person
revisits previous points in the building.
Wi-Fi Localization and GNSS
Achieving robust, reliable positioning in GNSS signal-challenged environments has long represented a kind of Holy Grail. One promising approach combines GNSS with terrestrial systems using existing wireless infrastructures. One company successfully used GPS and Wi-Fi and now Its technology is incorporated into a wide range of mobile “connected” platforms, including Apple’s iPhone and iPod.
A brand-new regional contest in the 2010 European Satellite Navigation Competition
Enter your original applications product or service in the USA Challenge, the newest regional contest in the 2010 European Satellite Navigation Competition. Win cash, an Inside GNSS cover story and free consultation with the
University of Calgary PLAN group
Comparing GPS Precise and Broadcast Ephemerides
Our series continues with easy16, an analysis of the
information available from a single set of GPS satellite signal
that can provide an insight into the nature of GPS error sources, the
matter most, and the ways that these can be modeled or eliminated.
A crucial milestone for the Galileo program and the GNSS community
Release of the Galileo OS SIS ICD marks the resolution of a complex
political process, and does so by coming down on the side of
transparency, non-exclusivity, and maximum public benefit.
GNSS data points and factoids to amuse and inform
Baton Rouge, Louisiana; Iqualuit, Nunavut; Western Europe; Afghanistan; Satish, Dhawan space center; Perth