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Article: SIGINT (Signals Intelligence)
- Article from:
- Encyclopedia of Espionage, Intelligence, andSecurity
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CopyrightCOPYRIGHT 2004 The Gale Group Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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SIGINT (Signals Intelligence)
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JUDSON KNIGHT
Signals intelligence, or SIGINT, is one of the four major forms of intelligence, along with human, imagery, and measurement and signatures intelligence (HUMINT, IMINT, and MASINT respectively). As its name suggests, it is intelligence derived from the interception of signals, including communications signals, electronic emissions, and telemetry. The two major subsets of SIGINT are COMINT, or communications intelligence, gained through the interception of foreign communications (excluding open radio and television broadcasts); and ELINT or electronics intelligence, derived from the interception of non-communication ...