In the early 1990s, I recall being tasked with training a group of foresters on how to use a new-fangled handheld data collector the company I worked for had developed, along with various pieces of software on it for traversing, timber cruising, vegetation surveys, profiling, etc. Being fairly young and somewhat inexperienced, I didn’t fully understand the challenge of trying... read more
The Soyuz site at Europe’s Spaceport in French Guiana is now ready for its first launch. ESA yesterday handed over the complex to Arianespace, marking a major step towards this year’s inaugural flight. read more
Modern GNSS will provide access control to the signal through spreading-code encryption and/or authentication at the navigation data level. This will require support within the receiver for secure cryptographic keys and the implementation of security functions. This article reviews vulnerabilities of these security functions, and reviews design considerations to mitigate attacks. read more
The new GPS L1C signal will be broadcast by the Block III satellites, with first launches as early as 2014. L1C innovations significantly enhance PNT performance as well as interoperability with other GNSS signals. The authors describe the benefits of its new features and how best to make use of each one. read more
Developing Strategies for the FutureA team of authors from Russian Space Systems, a key developer of navigation and geospatial technologies in the Russian aerospace industry, describes the new L3 CDMA signal to be broadcast by GLONASS-K satellites and the progress to date in developing the SDCM augmentation system. read more
I spent a day at the GIS In Action 2011 in Portland, OR this week. While it was a relatively small conference (~200 attendees), the former Governor of Wyoming and current Esri Director of Policy & Public Sector Strategy, Jim Geringer, was the keynote speaker who had a interesting perspective. The most interesting part of Mr. Geringer’s keynote was not... read more
First Overload Interference/Desensitization to GPS Receivers, Systems, and Networks Report to FCC; Plus Save Our GPS Coalition Forms; WAAS Official Again; EGNOS SOL Operational; Russian SBAS Satellite Passes Transponder Tests read more
As it was in the beginning, now and always, and to the ages of ages — or at least into the conceivable near future: GPS was, is, and shall be a dual-use system. Why, then, reading through the March 15 report of the Technical Working Group (TWG) to the FCC on LightSquared/GPS interference, do we find no mention at all of military receivers? read more
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