The F-14D fighter aircraft performs tracking and targeting functions using active and passive data from on-board sensors and also using tarGet information from other sources. An integrated data fusion processor is required to perform these functions. The proposed tracking and targeting system would be a multi-target multi-sensor tracking system that would accommodate all data types and would function under all conditions of data availability. All data fusion and processing would be integrated with optimal use of data and would produce a seamless operational environment. The system would also have a multi-hypothesis capability for resolving ambiguous target scenes, as required, and would provide track confidence levels for determining operational priorities. The track confidence levels would be aposteriori probabilities. These probabilities can be readily interpreted and would provide track confidence levels that can be directly compared for prioritizing.