 | Expert Advice: Remembering. And Resolving August 1, 2010
Article By: GPS World Staff Few outside the position, navigation, and timing (PNT) community will also recall that the day before the 9/11 attacks, the U.S. government released a landmark document that described the vulnerabilities of services provided by GPS to disruption, whether by attack or inadvertent interference. The...More>> |
 | Out in Front: Welling Up July 1, 2010
Article By: Alan Cameron One of the first industrial uses of GPS came in survey and seismic exploration for offshore oil, as evidenced by the cover story of this magazine’s September 1992 issue. A salient passage from that 18-year-old “Quality Control For Differential GPS in Offshore Oil and Gas Exploration” article:...More>> |
 | Stonewalling GPS Vulnerability June 23, 2010
Article By: Alan Cameron On February 8, the United States began shutting down its 20-odd Loran transmitters. The International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA), of which the United States is a member, continually recommends the use of eLoran as back up for GNSS, and is moving...More>> |
 | APEC GIT Meeting and Mapping Recovery Act Expenditures June 21, 2010
Article By: Eric Gakstatter This week I’m attending the Asia Pacific Economic Cooperation Meeting of the GNSS Implementation Team in Seattle. The focus of this meeting is on intermodal GNSS/GPS applications in transportation. Of course, GNSS/GPS is only the positioning part of the equation. Geospatial data and software is...More>> |
 | Expert Advice: Integrity: Lessons from the 2008 Financial Collapse February 1, 2010
Article By: Sam Pullen Deterministic risk modeling, the basis of the Efficient Market Hypothesis (EMH) at the core of modern quantitative finance, is known to be fundamentally flawed, but its elegance and convenience has blinded researchers to growing evidence of its weaknesses. The near-complete acceptance of the EMH...More>> |
 | Expert Advice: Availability Gaps: Solutions for Aviation December 1, 2009
Article By: James L. Farrell Recent attention given to aging GPS satellites and availability gaps from lagging constellation replenishment have provoked deep concern, particularly within the aviation community. Available remedies include exploitation of well known but unused methods plus new techniques; those discussed here...More>> |
 | DIRECTIONS 2007: Avionics & Transportation December 1, 2006
Article By: Bill Thompson The most important development I see with regards to transportation in the next 10 to 15 years is the reliance of the transportation industry on the use of satellite navigation using the GNSS. This assumes, of course that the GNSS is maintained, expanded, and modernized. This appears to be the case...More>> |
 | GPS Insights: November 2006 November 1, 2006
Article By: Bill Thompson Last month we discussed the implementation of <a href="http://adsb.faa.gov" target="_blank">Automatic Dependent Surveillance-Broadcast</a> (ADS-B) in the contiguous United States (CONUS). This month we explore ADS-B implementation in Europe. ADS-B makes use of a GNSS-derived position,...More>> |
 | GPS Insights: October 2006 November 1, 2006
Article By: Bill Thompson Hello, and welcome to the second issue of <i>GPS World's Avionics & Transportation</i> e-newsletter, providing timely analysis and focused news on the use of global positioning technologies in the aviation, transportation, and freight industries, once every month.More>> |
 | GPS Insights: September 2006 September 1, 2006
Article By: Bill Thompson Required Navigation Performance (RNP) operations can increase the number of aircraft that can occupy a particular airspace without compromising safety.More>> |
