Technical Article
Successful Proof-of-Concept Demonstration
A. S. Ganeshan, S. C. Ratnakara, Nirmala Srinivasan, Babu Rajaram, Neetha Tirmal, Kartik Anbalagan;
Indian Space Research Organisation
Earlier this year, India’s regional navigation constellation, IRNSS, demonstrated independent three-dimensional position determination for the first time using a combination of geostationary and geosynchronous satellites now in orbit. The navigation software team from the Indian Space Research Organization describes this achievement.
Technical Article
Harnessing the Progress in Computing
René Jr. Landry,
École de technologie supérieure;
Iurie Ilie,
Skydel Solutions
Thanks to advances in the design and capabilities of graphics processing units, the real-time computational capabilities of the conventional PC are significantly improved. This article describes the development and performance of an SDR simulator that combines the real-time computational capabilities of a GPU with universal software radio peripherals.
GNSS Solutions
Mark Petovello with Letizia Lo Presti and Monica Visintin
GNSS & the Law
An occasional series on GNSS legal issues
Amedeo Arena,
University of Naples Federico II;
Ingo Baumann,
BHO Legal
Level playing field or national “champions”? This article by two legal scholars examines the legal, economic, and political issues arising from the cross-currents caused by the requirements of international trade agreements and the inclination of nations to favor their own GNSS programs.
Thinking Aloud
Loose Lips Sink Ships
Glen Gibbons
Having set what many in the Defense Department call the Gold Standard of PNT, it would be a shame to see a “Defexit” from GPS.
Human Engineering
Peter Gutierrez
The cornfields of eastern China cemented this engineer's interest in GNSS positioning and navigation.
Working Papers
Processor Technology for GNSS Software Receivers in the Year 2015
Jürgen Dampf, Thomas Pany, Wolfgang Bär, Jón Winkel, Carsten Stöber,
IFEN GmbH;
Karl Fürlinger,
Ludwig-Maximilians-University (LMU) Munich;
Pau Closas,
Centre Tecnològic de Telecomunicacions de Catalunya;
J. A. Garcia-Molina,
HE Space for European Space Agency/ESTEC
Recent increases in computational power can be used to build more efficient GNSS software receivers. Experimental benchmarks show how well the currently available technology can be exploited for these purposes. A personal computer (maximum number of channels greater than 1,000) and an embedded board (maximum number of channels less than 100) are tested under various scenarios, with promising results for future applications.
Eliza A. Schmidkunz
Cuba Libres, Lucky Seven Airmen, GPS Launch Competition and Staying Calm…