Non-communications signals

In signals intelligence (SIGINT), non-communications signals are any signals sent out for a purpose other than communicating information. This includes radar emissions and emissions from instrumentation (which provide information, but are not sent out for the purpose of providing information to others).[1][2][3]

Electronic signals intelligence (ELINT), which came to be studied in great detail after World War II, attempts to detect and analyze enemy non-communications signals.[3][4] Foreign instrumentation signals intelligence (FISINT) focuses specifically on non-communications signals emitted by instrumentation, including telemetry signals sent between components of a system.[5]

References
  1. Obi-Nwosu, Harry (April 15, 2014). "MILITARY COMMUNICATIONS AND INTELLIGENCE". Practicum Psychologia. 4 (1) – via www.journals.aphriapub.com.
  2. "Using OPNET for Modeling of Non-Communications Emitters in an Air Defense Environment". CiteSeerX 10.1.1.18.8065. {{cite journal}}: Cite journal requires |journal= (help)
  3. Johnson, Loch K. (January 24, 2007). Handbook of Intelligence Studies. Routledge. ISBN 9781135986889 – via Google Books.
  4. Howe, George (1974). "The Early History of NSA" (PDF) – via nsarchive2.gwu.edu.
  5. Mezzanotte, Diane (April 1, 2000). "Infocentricity and Beyond: How the Intelligence Community Can Survive the Challenges of Emerging Technologies, Shrinking Budgets, and Growing Suspicions". Archived from the original on April 15, 2021 – via apps.dtic.mil.


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