Survey

LightSquared: CEO, Executive VP Over and Out

March 5, 2012By

The LightSquared machine continues to implode as CEO Sanjiv Ahuja and Executive Vice President Martin Harriman resigned last week in the wake of the NTIA recommendations against LightSquared rolling out their system. This week, Bloomberg reported that Sprint will end its infrastructure sharing deal with LightSquared. Meanwhile, the FCC is accepting public comments on the NTIA's recommendations. read more

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Galileo’s Surveying Potential: E5 Pseudorange Precision

March 1, 2012By
Col-opener

New Galileo signals have great potential for pseudorange-based surveying and mapping in both optimal open-sky conditions and suboptimal under-canopy environments. This article reviews the main features of Galileo’s E5 AltBOC and E1 CBOC signals, describes generation of realistic E5 and E1 pseudoranges with and without multipath sources, and presents anticipated horizontal positioning accuracy results, ranging from 4 centimeters (open-sky) to 14 centimeters (under-canopy) for E5/E1. read more

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Expert Advice: Thank Your Lucky Stars

March 1, 2012By

In my 20-plus years of involvement in the GPS/GNSS industry, nothing has come close to the LightSquared debate for technical and political complexity, nor for potential effects on nearly every high-precision GPS/GNSS user in the United States. The industry’s destiny is somewhat controlled by a federal agency that is not very knowledgeable about how, when, and where GPS is used — although I’m sure they’ve learned a lot in the last 14 months. read more

FCC Begins GPS Receiver Design Discussions with Workshop

February 28, 2012By

The Federal Communications Commission (FCC) Office of Engineering and Technology will host a workshop on spectrum efficiency and receivers on Monday, March 12, and Tuesday, March 13, in the Commission Meeting Room at FCC Headquarters in Washington, D.C. The meeting is part of the FCC’s efforts to enhance the use of spectrum for mobile broadband — including LightSquared — and... read more

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Should GPS Users Accept New ‘Fees’?

January 12, 2012By

This week, I'm pleased to present to you an essay written by Gavin Schrock, a licensed land surveyor (Washington), technology writer and administrator of the Washington State Reference Network (WSRN), which operates 103 GNSS reference stations that comprise the statewide RTK Network. read more

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On the Edge: History Underfoot

January 1, 2012By
Strand-W

Beneath the surface of a tropical paradise in the city of Townsville on Australia’s Sunshine Coast lies a hidden maze of tunnels and underground bunkers, once said to be used by General Douglas MacArthur. Learning the secrets of this labyrinth that was a major World War II staging point for battles in the Southwest Pacific is the passion of Kevin Parkes of Geo Positioning Services, Townsville. read more

This article is tagged with and posted in Defense, Government, Mapping, Mapping, Survey, Surveying

A Nationwide RTK Network: A Great Idea, But…

December 12, 2011By

Some folks are proposing that a nationwide RTK Network (RTN) be piggy-backed on the controversial LightSquared communications network. That could be cool, if it can be done. No one is saying that it can’t be done, but there are reservations on whether it would be worth the massive investments needed to pull it off, and that there might be little gain at all over the existing presence of RTN in the U.S. read more

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Directions 2012: A Look Ahead

December 7, 2011By

At the end of every year, I title this column Directions, in which I discuss significant developments, trends, technologies, companies, and so on, in the GNSS industry. This year, two entities have captured my attention and have the potential to significantly transform the GNSS industry: the FCC/LightSquared and Galileo, the European satnav system. read more

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