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  2. Signals intelligence - Wikipedia

    en.wikipedia.org/wiki/Signals_intelligence

    Signals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of signals, whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication (electronic intelligence—abbreviated to ELINT). [1]

  3. List of intelligence gathering disciplines - Wikipedia

    en.wikipedia.org/wiki/List_of_intelligence...

    Electronic intelligence (ELINT) – gathered from electronic signals that do not contain speech or text (which are considered COMINT) Foreign instrumentation signals intelligence (FISINT) – entails the collection and analysis of telemetry data from a missile or sometimes from aircraft tests; formerly known as telemetry intelligence or TELINT

  4. Signals intelligence by alliances, nations and industries

    en.wikipedia.org/wiki/Signals_intelligence_by...

    SIGINT Systems appears to be a British firm that makes the "HARVESTER family of SIGINT database applications (that) provide unique and cost-effective solutions to a wide range of collection requirements" [35] and has a website that can serve as a basic tutorial on the technical aspects of what SIGINT systems collect.

  5. Foreign instrumentation signals intelligence - Wikipedia

    en.wikipedia.org/wiki/Foreign_instrumentation...

    Since it deals with signals that have communicational content, it is a subset of Communications Intelligence (COMINT), which, in turn, is a subset of SIGINT. Unlike general COMINT signals, the content of FISINT signals is not in regular human language, but rather in machine to machine (instrumentation) language or in a combination of regular ...

  6. Measurement and signature intelligence - Wikipedia

    en.wikipedia.org/wiki/Measurement_and_Signature...

    Signal collectors, which concentrate the energy, as with a telescope lens, or a radar antenna that focuses the energy at a detector; Signal detectors, such as charge-coupled devices for light or a radar receiver; Signal processing, which may remove artifacts from single images, or compute a synthetic image from multiple views; Recording mechanism

  7. Signals intelligence operational platforms by nation - Wikipedia

    en.wikipedia.org/wiki/Signals_intelligence...

    A United States Air Force Boeing RC-135 aircraft in flight Royal Air Force Hawker Siddeley Nimrod A52 Oste, an Oste class ELINT and reconnaissance ship, of the German Navy. Signals intelligence operational platforms are employed by nations to collect signals intelligence, which is intelligence-gathering by interception of signals, whether between people (i.e., COMINT or communications ...

  8. Sensitive compartmented information - Wikipedia

    en.wikipedia.org/wiki/Sensitive_compartmented...

    TK covers space-based IMINT (imagery intelligence), SIGINT (signals intelligence), and MASINT (measurement and signature intelligence) collection platforms; related processing and analysis techniques; and research, design, and operation of these platforms (but see Reserve below). [15]

  9. Signal (IPC) - Wikipedia

    en.wikipedia.org/wiki/Signal_(IPC)

    In particular, the POSIX specification and the Linux man page signal (7) require that all system functions directly or indirectly called from a signal function are async-signal safe. [6] [7] The signal-safety(7) man page gives a list of such async-signal safe system functions (practically the system calls), otherwise it is an undefined behavior ...