The Westinghouse ARSR-3 installed at Laegern, Switzerland, is a minimally attended, long range coherent L-band radar. Originally designed and built for the U.S. Federal Aviation Administration for fixed and mobile installations, it uses advanced radar techniques to detect even small aircraft in the presence of heavy clutter; it provides coverage out to 370 km in range with a 30-kin elevation against a two-m 2 target.