SB-WASS (Wide Area Surveillance Satellite)

SB-WASS was a series of ELINT (electronic intelligence) satellites developed by the United States Navy. Each SB-WASS consists of a primary infrared-scanning satellite and a triplet of associated drone craft. Triangulation, together with the known time lag between the satellites, enables the exact location of a target to be determined. Weapons targeting data are then sent from the SB-WASS to air and ground controllers by laser communications.