KEYWORDS: Sensors, Infrared search and track, Detection and tracking algorithms, Target detection, Calibration, Signal to noise ratio, Signal detection, Signal processing, Modulation transfer functions, Electronics
The parameter values for a Navy's IRST (infrared search and track) sensor are determined by (1) the operational requirements, (2) the available best technology, and (3) past experience with IRST system design. The selection process for the parameter values is illustrated by use of a set of operational requirements representative of the North Sea. Initial values of the optics parameters are determined by use of a design diagram. The approximate sensor parameter values are input to the TEDIS design computer algorithm for optimization. The effectiveness of the false-alarm reduction algorithms will depend on some of the sensor parameter values. The final assessment of these values can therefore be made only after performance testing of the algorithms. The design of a combined radiometer -- IRST testbed, the SIRDAS, is outlined. This system is used for measuring high quality target and clutter data in the potential battlefields. This data is essential for testing and fine-tuning of the all- important false alarm reduction algorithms.
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