GPS

GPS Timing Used in Experiment to Measure ‘Faster Than Light’ Particles
November 17, 2011

GPS Timing Used in Experiment to Measure ‘Faster Than Light’ Particles

OPERA neutrino detector in Gran Sasso, Italy. INFN photo

No sooner had GPS positioning helped validate key aspects of Einstein’s general theory of relativity in the Gravity Probe-B program than GPS timing has been cited as helping bring his special theory of relativity into doubt.

At issue is the so-called OPERA (Oscillation Project with Emulsion-tRacking Apparatus) experiment, inaugurated in 2006 with the main goal of studying the rare transformation (oscillation) of muon neutrinos into tau neutrinos.

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By Inside GNSS
Oh No! Not LightSquared Again!
November 16, 2011

Oh No! Not LightSquared Again!

Please.

Please. Please. Please. 

Can we please talk about something besides LightSquared?

Not yet? You mean, they are still here?

And we have so many other GNSS-related topics that deserve comment: 

Some peculiar cuts in civil GPS funds and GPS III budgets being proposed by congressional committees. 

A re-examination — aka analysis of alternatives — of GPS and PNT options in general. Space weather and an impending solar max. Warrantless GPS-aided tracking before the Supreme Court.

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By Inside GNSS
LightSquared: Who Pays for GPS Receiver Fixes Yet to be Devised?

LightSquared: Who Pays for GPS Receiver Fixes Yet to be Devised?

With more testing on the horizon and a potentially alarming homeland security report about to be released, LightSquared’s efforts to begin work on its proposed wireless broadband service are stuck in the procedural mud.

The delays, which are never good for a commercial company, are piling up just as the firm’s coffers are thinning and need to be replenished with a new round of fund raising.

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By Dee Ann Divis
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True3D HUD Wins Global SatNav Competition

True3D HUD Wins Global SatNav Competition

Mike Rowe, host of the Discovery Channel series Dirty Jobs, gets behind the wheel with MVSC’s HUD system at the Makers Faire in San Mateo, California. MVSC CEO Chris Grabowski sits in the passenger seat; CTO Tom Zamojdo is in straw hat. Photo by Valerie Hall.

A San Francisco Bay Area company — Making Virtual Solid–California (MVSC), which snared a trio of awards in a global GNSS competition for its novel approach to driver assistance, is still in early phases of development.

The origins of the company, however, go back more than 40 years to the Cold War era when its principals, Chris Grabowski and Tom Zamojdo, were studying physics and theoretical mathematics at the University of Warsaw, Poland.

But more about that later — first, the news.

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By Inside GNSS
2012 East Coast Seminars: NavtechGPS
November 13, 2011

2012 East Coast Seminars: NavtechGPS

NavtechGPS will offer its 2012 East Coast GNSS technical seminars at the Doubletree Annapolis in Maryland, USA from June 18 through June 22.

The seminar instructors are Penny Axelrad, John Betz, Chris Hegarty, Alan Pue and James Sennott.

For more than 25 years, NavtechGPS has provided GPS/GNSS applications solutions for military and research customers, with product choices from more than 30 manufacturers, and has organized basic and advanced GNSS seminars for engineers and technical professionals all over the United States.

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By Inside GNSS
2012 West Coast Seminars: NavtechGPS

2012 West Coast Seminars: NavtechGPS

NavtechGPS will offer its 2012 West Coast GNSS technical seminars at the Doubletree Mission Valley Hotel in San Diego, California from March 26 through March 30.

The seminar instructors are Penny Axelrad, John Betz, Chris Hegarty, Alan Pue and James Sennott.

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By Inside GNSS
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Homeland Security Studies Risks to GPS, Prompts Spoof-Proof Receiver Proposal
November 11, 2011

Homeland Security Studies Risks to GPS, Prompts Spoof-Proof Receiver Proposal

Although a Department of Homeland Security (DHS) report on the risks posed by GPS disruptions has yet to be released, the analysis has inspired a proposal to create receivers capable of self-diagnosing spoofing attempts.

“The receiver is the first line of defense,” Logan Scott, president of LS Consulting, told members of the National Space-based Positioning, Navigation, and Timing (PNT) Advisory Board this week.

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By Inside GNSS
Munich Satellite Navigation Summit 2012
November 10, 2011

Munich Satellite Navigation Summit 2012

A Residenz courtyard, Munich

The 2012 Munich Satellite Navigation Summit will take place at the Residenz Munchen in Germany from March 13 to 15. This year’s opening plenary theme is "GNSS and Security."

This year marks the 10th anniversary of this key European and international event on the policies and direction of the global navigation satellite systems.

The program has been posted online.

Planned 2012 discussions include:

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By Inside GNSS
IP Solutions Introduces ReGen GNSS Simulator
November 9, 2011

IP Solutions Introduces ReGen GNSS Simulator

IP Solutions ReGen software simulator GUI

Tokyo, Japan–based IP Solutions has released its ReGen GNSS DIF Signal Simulator, a software simulator that simulates ionospheric effects, generates digital IF (DIF) signals similar to those recorded by an RF recorder, and comes with an optional capability of simulating integrated inertial navigation.

Various configurations can produce multichannel GPS and GLONASS L1 signals and single-channel GPS L1, L2, L5 and GLONASS L1 and L2 signals, as well as simulating noise and interference.

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By Inside GNSS
GPS Coalition To FCC: LightSquared Must Not Use Upper 10-MHz Band
November 8, 2011

GPS Coalition To FCC: LightSquared Must Not Use Upper 10-MHz Band

A United States Army specialist explains GPS system to a Croation soldier in their mine-resistant, hardened vehicle, Afghanistan (2011 Photo: Brian Henriksen, US Army)

[Update November 9 2011] In an ex parte filing with the Federal Communications Commission (FCC) on November 8, a leading GPS advocacy group has asked that the agency “promptly rule” that LightSquared not be permitted to pursue high-powered terrestrial operations in the upper Mobile Satellite Services (MSS) band adjacent to the GPS L1 band.

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By Inside GNSS
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