Opinions

Test Results from Real-Time CORS Streaming, Space Weather and NDGPS

May 16, 2013By
KK2060Hole

Being a person who enjoys spending time in the field using RTK and DGPS, I followed up on my column last month, “Sources of Public, Real-time, High-Precision Corrections,” with a trip to the field to test the NGS CORS Streaming service. About a month ago, I made a trip to Colorado to attend the Space Weather Workshop in Boulder, stop... read more

This article is tagged with , , , and posted in Opinions, Survey

Trends in GPS/PNT User Equipment

May 15, 2013By
DJ-opener

“A Guide to Trends in GPS/PNT User Equipment” Presentation to the 11th Meeting of the PNT Advisory Board The following is an abbreviated transcript of Don Jewell’s briefing to the PNT Advisory Board at its meeting on Tuesday, May 7. The slides from Jewell’s briefing and the other briefings to the board are available at pnt.gov under the heading 11th... read more

This article is tagged with , , , and posted in Defense PNT Newsletter, Newsletter Editorials, Warfighter

What’s New in GNSS Simulation?

May 8, 2013By
Actual recordedflight data (left), ReGen replicated flight data (right).

It used to be that if you were going to build an RF navigation receiver, you had to also build your own simulation system to test it. I remember working with a couple of “home-built” RF simulation systems myself, way back when. We experience a lot of maintenance and support issues. And, of course, if you build something and also... 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

This article is tagged with , , and posted in GNSS News, Opinions, Simulators & Tools

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 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

This article is tagged with , , and posted in Opinions, Simulators & Tools

Out in Front: The System, Simulated

May 1, 2013By

Wealth, breadth, and depth. That’s what this issue brings you, in signal simulation- and testing-related content. Unfortunately, the wealth on offer has to large extent elbowed out our two news sections, The Business and The System. The former is given short shrift in this issue and the latter even shorter herewith, in pithy precis with website shortcuts. And our apologies.... read more

Competition to PNDs Coming from All Angles

April 25, 2013By

It isn’t the same old news that the portable or personal navigation device, PND, has lost a lot of ground to mobile applications found on smartphones. The reason it isn’t old news is that the drop in sales is being measured by the millions — from a high of 33 million in 2011 — to a little more than half... read more

This article is tagged with and posted in Newsletter Editorials, Wireless LBS Insider