Global Navigation Satellite Systems Engineering, Policy, and Design
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.
By Inside GNSS
“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?
By Inside GNSS
Organized by the European Space Agency with the collaboration of a number of national space organizations, this intensive course will cover GNSS error sources related to radiowave propagation and interference effects.
It is aimed at engineers, geodesists, physicists and advanced students with appropriate degrees and a knowledge of GNSS fundamentals, statistics and signal processing.
By Inside GNSS
The 44rd PTTI systems and applications meeting and industry exhibit will be held at the Hyatt Regency Reston Town Center in Reston, Virginia on November 26-29, 2012.
PTTI 2012 will address time and frequency standards; time transfer theory, techniques and applications; PTTI in current applications; atomic and advanced clocks; time scales, algorithms and methods; GNSS receivers timing and calibration; military applications; and novel applications using PTTI.
By Inside GNSS
"Multi-GNSS Navigation Technologies: Galileo’s Here" is the theme of the 6th ESA Workshop on Satellite Navigation Technologies.
The European Space Agency event will be held from December 5 to 7, 2012 at ESTEC, at the northern tip of Noordwijk, Netherlands.
Online registration is open until December 4 at the website below. After that, you must register at the conference itself.
By Inside GNSS
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.
By Inside GNSS
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.
By Dee Ann Divis
Abstract submission for the 5th International Conference on Spacecraft Formation Flying Missions and Technologies (SFFMT 2013) is now open. Deadline for submissions is December 31, 2012. Organized by the German Aerospace Center (DLR) Space Operations Center (GSOC), the event is supported by numerous national space agencies and related aerospace organizations. Organizations interested in cosponsoring the event should contact the chairman for SFFMT 2013, Simone D’Amico, of DLR-GSOC.
By Inside GNSS
NavtechGPS will host its 11th Annual Open Mic Night on Thursday, Sept. 20, 2012, from 8 p.m. to midnight during the ION GNSS 2012 conference at none other than the well-known Cannery Ballroom at the Mercy Lounge on Cannery Row. This musical evening will include performances by ION’s own Augmentations — complete with back-up singers, the Pseudorandom Noise, together with other talented folks from the conference. In addition to live music and a night of fun and Karaoke, five $100 cash prizes will be raffled off.
By Inside GNSS
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.
By Inside GNSS
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?”
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.
By Inside GNSS
To help counter pressures from federal budget cutters and wireless advocates searching for more broadband spectrum, the National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board is crafting a study documenting the economic benefits of GPS.
“We have a new assignment . . . to discover and disclose the economic contributions of the Global Positioning System,” Chairman Jim Schlesinger told the board at an August 15, 1012 meeting of the advisory board.
By Dee Ann Divis
