Acoustic technology for aircraft wake vortex detection

A new acoustic technology is discussed as a practical, robust, and inexpensive means to detect wake vortices in the airport terminal area. The ground based system has been proven effective in accurate measurement of the strength and direction of circulation produced from a small Piper aircraft in field trials. This technology acts to detect the presence or absence of vortices within a designated measurement area. Positioning multiple systems at the edge of a runway safety zone can determine if a vortex has left the safety corridor or not. Vortices leaving the safety corridor indicate the runway is safe for additional air traffic. The ultimate goal of the operational system is to allow reduced separation standards and increase airport capacity. Specific anticipated application of this technology to various surface wind conditions and runway configurations is presented. Field testing is planned to confirm the capability of the technology for application at a large airfield with large aircraft.