Disruption created by intentional generation of fake GPS signals could have serious economic consequences. This article discusses how typical civil GPS receivers respond to an advanced civil GPS spoofing attack, and four techniques to counter such attacks: spread-spectrum security codes, navigation...More>>

The ESRI Federal Users Conference at the Walter E. Washington Convention Center was surprisingly well attended considering the economy. Two weeks later I attended the USGIF sponsored ICRSS conference at the Ronald Reagan Center in D.C.More>>

Several weeks ago I attended the 2009 Department of Justice (DOJ) Crime Mapping conference. This annual conference focuses strictly on crime mapping, GIS, statistical tools and related technology. Since it’s the only national conference related to crime mapping there was a wide array of...More>>

Since its birth at the dawn of the Web mapping era, Autodesk's GIS and design software has evolved into open-source, commercial, and enterprise versions. Today, open-source developers have access to a variety of tools and resources to support their Web mapping projects.More>>

Web-based geospatial applications that anyone can use are making geospatial technology ubiquitous. The success of these applications, however, depends on a variety of Internet and Web standards, as well as those provided by geospatial standards development organizations and initiatives. Standards...More>>

Many data providers allow customers to order online, but in many cases product fulfillment is still a manual - and time-consuming - process. The City of Surrey and three other spatial data providers employed an ETL solution to build systems that emphasize the e throughout the process. True...More>>

A study of human analysts' performance during geospatial data inspection explores the feasibility of gaze tracking as a disambiguation tool in the visual search for a target in high-resolution imagery.More>>

The eyes of the world have been watching Asia lately, focused in particular on the dramatic evolution of China and India.More>>

JPEG 2000 (JP2) is quickly becoming an accepted file format for storing large amounts of geospatial imagery. And a number of groups around the world are taking the next step -- bringing JP2's capabilities into our geospatial networks, or in other words, the GeoWeb.More>>

Contemporary orthoimagery datasets generated from aerial imagery are proving to be valuable assets to government and industry groups that use GIS to evaluate, analyze, and update ground condition data.More>>