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For example, a sequence of a radar signal, followed by an exchange of targeting data and a confirmation, followed by observation of artillery fire, may identify an automated counterbattery fire system. A radio signal that triggers navigational beacons could be a radio landing aid for an airstrip or helicopter pad that is intended to be low-profile.
Before the development of radar and other electronics techniques, signals intelligence (SIGINT) and communications intelligence (COMINT) were essentially synonymous. Sir Francis Walsingham ran a postal interception bureau with some cryptanalytic capability during the reign of Elizabeth I, but the technology was only slightly less advanced than men with shotguns, during World War I, who jammed ...
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 ...
Signals intelligence (SIGINT) are gathered from interception of signals. Communications intelligence (COMINT) Electronic intelligence (ELINT) – gathered from electronic signals that do not contain speech or text (which are considered COMINT)
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
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 ...
Signals intelligence (SIGINT), a discipline overlapping with ES, is the related process of analyzing and identifying intercepted transmissions from sources such as radio communication, mobile phones, radar, or microwave communication. SIGINT is broken into two categories: electronic intelligence and communications intelligence .
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.