National and Multinational
There has been work on developing standardized MASINT terminology and architecture in NATO. Other work addresses the disappointments of Non-Cooperative Target Recognition. For this function, infrared beacons (infrared MASINT) proved disappointing, but millimeter-wave recognition shows more promise. Still, cooperative, network-based position exchange may be crucial in preventing fratricide. The bottom line is that MASINT cannot identify who is inside a tank or aircraft of interest.
Numerous countries produce their own antisubmarine warfare sensors, such as hydrophones, active sonar, magnetic anomaly detectors, and other hydrographic sensors that are frequently considered too "ordinary" to be called MASINT.
Read more about this topic: Measurement And Signature Intelligence
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—J. Ellen Foster (1840–1910)