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==Origin and history==
JTIDS began with an advanced planning study sponsored by the Air Force Electronic Systems Division (ESD) Advanced Plans (XR) at L.G. [[Hanscom Field]]. The study was conducted by the [[MITRE Corporation]] in 1967 and the principal investigators were Vic Desmarines who later became MITRE President and [[Gordon Welchman]] who had been instrumental in breaking the German [[Enigma machine]] code as the head of "[[Hut 6]]" at [[Bletchley Park]], England. Gordon wrote a book titled "The Hut 6 Story" which described his activities and contains some additional information about his work at MITRE. The study concluded that on the battlefield valuable information was available that was not getting to the combat forces that needed it because of fundamental deficiencies in communications architecture. Gordon suggested a radical architecture where elements that had critical information could broadcast it and units that needed the information could selectively process what was of immediate value. This was a significant departure from the circuit-oriented communications architectures then in use and a way to eliminate overcrowding and confusion in the radio nets used to interconnect aircraft and some ground forces. A second recommendation was the need for a consistent and reliable basis for position which was available to all combat elements dubbed a "Common Position Grid". The overall study was called "Control and Surveillance of Friendly Forces" CASOFF.
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JTIDS was not created by a single individual. Rather it was the culmination of a group of individuals each having expertise in specific disciplines including but not limited to system engineering, operational analysis, cost benefit analysis, message standards, software development, communications, signal processing, vulnerability analysis, error detection and correction, antenna design, multipath analysis, electromagnetic compatibility mechanical engineering, navigation, specification generation and others. For a considerable period during JTIDS conception as many as 50 people were employed full-time in its development with as many as 50 more in part-time supporting roles.
In the ensuing years the program has transitioned from an intensive development effort to a more classical acquisition effort. Development has continued but efforts have been oriented more toward incorporation of breakthroughs in technology and efforts to improve quality and reduce size, weight and cost. In the early 1990s the Navy took over the executive management of the program. As the program has expanded throughout the U.S services and NATO a great deal on operational innovation has occurred driven by the basic flexibility of the architecture and the imagination of the operational user. As a result, the operational utility of the system has been enhanced over what was originally envisioned by the early developers. Although the JTIDS system has been a long time in development most of the technology is still "state of the art" and the system should be viable for the foreseeable future.
JTIDS is also used by other members of [[NATO]].
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