One of my early projects with NextGen Aeronautics was the fabrication and integration of a milimeter wave radar system, camera, computers, and software for the location and identification of FOD (foreign objects and debris) on commercial runways. The FAA purchased several vehicles and tested them in Chicago and Hawaii among other places. The concept and radar were created by Trex Enterprises of San Diego CA.
FOD Finder – http://www.fodfinder.com/
Trex Enterprises – http://www.trexenterprises.com/
NextGen Aeronautics – http://www.nextgenaero.com/
Dana P. Howard – http://highlandwolf.com