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Prewetting systems as an active IR signature control tool

The advent of low-observable (stealth) ships, of which the new Air Defense and Command Frigate (LCF) is an example, must be followed by an increased interest in signature control during operations. Taking full operational advantage of the stealth character of low-observable ships requires on-board signature control. At all times, the ship's visibility for expected threats must be known. This paper presents an active infrared-signature control system, that will be used on board the LCF. The system is the first step towards a full signature management system, which takes into account all systems affecting the signature during operations. Such a system should not only consider electro- optical signatures, but all relevant signatures: radar, acoustic, magnetic, etc.