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Inside GNSS • September/October 2012

Improving GNSS Attitude Determination

This article describes an integration of a single-frequency GNSS, two-antenna heading system with low-cost inertial and magnetic field sensors in order to improve the availability and reliability of pure GNSS attitude determination. This method calculates a redundant attitude solution in an error-state Kalman filter using different sensor setups. As a result, the process of carrier phase ambiguity resolution accelerates.

Inside GNSS • September/October 2012

Spoofs, Proofs & Jamming

“Here is Edward Bear, coming downstairs now, bump, bump, bump, on the back of his head, behind Christopher Robin. It is, as far as he knows, the only way of coming downstairs, but sometimes he feels that there really is another way, if only he could stop bumping for a moment and think of it. And then he feels that perhaps there isn’t.”
- A.A. Milne, Winnie-the-Pooh

Is our faith in the integrity and infallibility of the Global Positioning System misplaced or, perhaps, insufficiently grounded?

October 15, 2012 - October 17, 2012
Madrid, Spain
November 26, 2012 - November 29, 2012
Reston, Virginia USA
Events • August 31, 2012

ION's Big Year! GNSS 2012 Plus a New Pacific Rim Conference

It's a big year for the Institute of Navigation, with the venerable ION GNSS 2012 happening this September in Nashville and the new and highly anticipated Pacific PNT conference opening for the first time next April in Honolulu.

ION GNSS 2012, the granddaddy of all GNSS events, begins shortly in Music City, USA: Nashville, Tennessee.

It's scheduled during the third week of September at the downtown Nashville Convention Center, a five minute walk to the Country Music Hall of Fame and other attractions.

August 31, 2012

U.S. Officials Explore Use of the EU's Galileo Secure Civil Signal

The United States and the European Union are talking about how U.S. agencies might use the secure signal planned for Galileo to better fulfill their various responsibilities.

September 20, 2012
Nashville, Tennessee
New Builds • August 27, 2012

Applanix Launches New Airborne Photogrammetric Mapping System

Applanix introduced a new position and orientation system and flight management system (FMS) for airborne mapping today (August 27, 2012) at the International Society of Photogrammetry and Remote Sensing (ISPRS) 2012 Conference in Melbourne, Australia.

Inside GNSS • July/August 2012

GNSS Hotspots

1. PAPER CUTS
Washington, Oklahoma, Ohio, Georgia, Pennsylvania
√ State transportation departments in Georgia, Pennsylvania, Oklahoma, and Ohio are printing fewer state highway maps, says the Associated Press. Washington did away with them entirely. Blame it on the double whammy of public sector budget cuts and smartphone, handheld, and in-car GPS. But there are lots of holdouts. As one Indiana man said, without a paper map, “You’re beholden to the GPS lady, you know?”

August 17, 2012

GPS Advisors Urge Air Force to Switch on Full L2 Civil Signal

The nation’s top GPS experts pressed the Air Force this week to turn on the full capability of the L2C civil GPS signal that the military has been broadcasting without a navigation message despite having had signal-equipped satellites on orbit for years.

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