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Air Combat Maneuvering Instrumentation (ACMI) Section TACTS/ACMI GAP Sources


ROCAF installed its Tactical Aircrew Combat training System/Air Combat Maneuvering Instrumentation (TACTS/ACMI) training range at Taitung (Chihhang) AFB in July 1988, with assistance from the United States. This system used multilateration ground position techniques to calculate Time-Space-Position Information (TSPI) of the aircraft. This technique requires multiple instrumented sites to be in line-of-sight with the aircraft at all times. Such a system is thus termed "tethered". The airborne segment of ROCAF TACTS/ACMI system consisted of 27 Airborne Instrumentation Subsystem (AIS) pods, which could transmit essential aircraft data to ground instrumented sites.

With this system, the accuracy of the calculated position is dependent on the relative position of the aircraft and the instumented sites, of which a minimum of 3 are required at all times to track the participants. The size of the effective training range airspace is limited by the number and placement of ground instrumented sites. Hence, the training airspace was restricted to off the coast of Taitung. As China introduced advanced fighters, such as the Su-27, the system has become since obsolete. In mid 1990s, ROCAF decided to upgrade the system to expand training range airspace.


In April 1999, the U.S. Air Force awarded San Diego-based Cubic Corporation a $28 million FMS contract to provide an upgraded for the tethered TACTS/ACMI system. The GPS ACMI Program (GAP), as the program is called, includes 24 AIS pods, six sets of display and debriefing equipment, and other subsystems. Cubic delivered the Taiwan GAP in December 2000. ROCAF confirmed completion of the installation in July 2002.

Using GPS technology, the new "rangeless" system allows pilots to train in any available airspace without reliance on a tethered range. The system is based on the Nellis Air Combat Training System (NACTS) at Nellis AFB, which supports up to 100 high-activity aircraft and up to 100 simultaneous weapon simulations in a single training exercise. Taiwan's system supports pilot training in the F-5, F-16, and IDF.

In April 2002, the U.S. Air Force awarded Cubic Corporation another $6 million contract to provide upgrades to the Taiwan GAP. The software and hardware upgrades will increase the range's air coverage for real-time missions and improve the training capability of the existing ACMI system. The enhancements include the addition of two remote sites, new weapon simulations, and changes that will allow ROCAF to maintain training capability despite cellular telephone interference. Work is scheduled to be completed in March 2004.


 Last update: 12/02/04 TaiwanAirPower > Air Force > Top