Vexcel has announced the release of its multi-purpose web-based GIS system, VexLink, for homeland security applications. The system was originally developed to facilitate the installation of high-speed wireless data networks by assessing clear line of sight conditions between geographic locations. The newest expansion of Vexlink’s capabilities includes the addition of emergency preparation and emergency response simulation functions.
As an emergency preparation tool, VexLink is used to study the propagation of toxic gas and other airborne contamination. Models created from these studies provide vital information for risk assessment and evacuation planning. The system combines Vexcel’s 3D building and terrain data with formulas that simulate variables, such as airflow patterns and wind speed, to show the direction and distance toxic pollutants would likely follow if released. The US Environmental Protection Agency is performing studies of air pollution following the September 11, 2001 World Trade Center collapse using Vexcel’s data in this way.
