Both industrials and French government services are inclined to using realistic sensor simulation models in the specification, the conception and the qualification of the weapon systems. When considering the development of multi mode weapon systems, that offer enhanced capabilities, an important new domain in the field of sensor simulation is the multi spectral one, especially for infrared, millimetric radar and acoustic spectrums. CHORALE will precisely be a simulation tool for modeling the battlefield `seen' by an infrared, millimetric radar and acoustic sensor. It fulfills the requirements for a realistic infrared simulation. It will then evolve to millimeter radar and acoustic spectrum (which doesn't concern this paper's topic).
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