The AN/FPS-108 COBRA DANE radar is an active electronically scanned array installation operated by the United States Air Force at Eareckson Air Station on the island of Shemya, Alaska.[1] This radar system was built in 1976 and brought on-line in 1977 for the primary mission of intelligence gathering in support of verification of the SALT II arms limitation treaty. Its single face radar with a 29 m (95 ft) diameter phased array radar antenna faces the Kamchatka Peninsula and Kura Test Range. Cobra Dane operates in the 1215-1400 MHz band.[2]
It initially employed a Control Data Corporation Cyber 74 mainframe computer for data processing.[3] Data from the radar is sent to the North American Aerospace Defense Command (NORAD) at Cheyenne Mountain Operations Center. It is also listed as a partner of the NASA Orbital Debris Program Office and works with the Missile Defense Agency.[1]