Expert Advice & Leadership Talks

Expert Advice: Laser Reflectors to Ride on Board GPS III

September 1, 2013By
Figure 2. Structure and products of the Global Geodetic Observing System related to GPS performance.

By James J. Miller and John LaBrecque, NASA Headquarters, and A.J. Oria, Overlook Systems Technologies, Inc. Satellite laser ranging (SLR) and the results of combining SLR with GPS in the future will translate into significant performance advancements for generations to come, once it is fully implemented as part of the GPS III architecture. Simply put, SLR techniques will improve GPS... read more

Expert Advice: Looking Back to the Early Days of GPS

September 1, 2013By

By Len Jacobson Besides my family and friends, two major influences have guided my life. One is GPS, and the other is flying, although I’m not a pilot. Most of the flying was on business trips for GPS. I’ve been writing a book about my experiences and how I helped in a small way to bring GPS to the world.... read more

Expert Advice: The Chip-Scale Combinatorial Atomic Navigator

August 1, 2013By
Figure 1. C-SCAN conceptual implementation.

By Andrei Shkel, Defense Advanced Research Projects Agency (DARPA) Future breakthroughs in microtechnology for positioning, navigation, and timing (PNT) will likely rely on yet-to-be-exploited physics, new materials, highly specialized fabrication technologies, batch assembly techniques, selective wafer-level trimming and polishing, a combination of passive and active calibration techniques strategically implemented right on-chip, and introduction of innovative test technologies. Such microtechnology advances... read more

Expert Advice: Cooperative Updates with Maps 2.0

July 1, 2013By

By Oliver Kühn, Skobbler Not so long ago, paper maps were a necessity in many walks of life. Today, they are increasingly a nostalgic novelty, to coin a term. It’s not difficult to understand why digital maps replaced their paper brethren. Digital maps are more accurate, more adaptable, and most importantly, in an increasingly real-time environment, much faster at making... read more

Expert Advice: Little Tigers versus Wolves

July 1, 2013By
“B1 ICD was released while Regional System is officially operational, will affect domestic BDS receiver industry? Pros? Cons?”

By Greg Turetzky, Intel I recently attended the Fourth China Satellite Navigation Conference (CSNC, held May 15–17 in Wuhan, China), as an invited speaker and panelist. I had attended the third CSNC last year in Guangzho, and as expected this year’s was a little bigger and a little better. The Chinese GNSS industry is growing quickly, as evidenced by the... read more

Expert Advice: The Challenge of BeiDou

May 1, 2013By

By Mark Sampson, Racelogic GNSS is changing. The days of only American GPS satellites providing signals to the civilian population are gone as new constellations are launched. GLONASS was a slow starter, but is now well established, and its signal architecture is now commonly implemented in manufacturers’ chipsets. Galileo is still very much in test phase with global coverage planned... read more

Expert Advice: Keeping up with Multi-GNSS

May 1, 2013By
Steve Hickling

By Steve Hickling, Spirent GNSS have been with us for more than 30 years, giving rise to a wealth of positioning and navigation technologies for military, civilian, and consumer use. Today, we’re entering a new era of experimentation and innovation in satellite and hybrid positioning. In turn, this drives new test challenges and introduces an ever wider group of engineers... read more

This article is tagged with and posted in Expert Advice & Leadership Talks, OEM Opinions, Simulators & Tools

Expert Advice: Product Testing: Simulation and Beyond

May 1, 2013By

By Pierre Nemry and Jean-Marie Sleewaegen, Septentrio Satellite Navigation Today’s customers ask for high-accuracy positioning everywhere, even in the most demanding environments. The time is long gone that the only requirement for a receiver was to track GPS L1 and L2 signals in open-sky conditions. State-of-the-art receivers operate in increasingly difficult conditions, cope with local radio-frequency interference, survive non-nominal signal... read more