Signature reduction technology

FOI conducts multi-disciplinary analyses of stealth vessels and detailed analyses for use in the design of subsystems with low signature properties. Radar and IR propagation characteristics of materials and objects are predetermined and analysed so that signatures can be minimised without affecting other performance-critical properties, for example aerodynamic or structural characteristics.

FOI is responsible for the two national signature codes, SAFIR, for IR calculations, and EMCAV, for radar signature calculations of cavities (typically air intakes). These tools are being developed in collaboration with various companies in the SAAB Group and with Volvo Aero, which are both users of the codes.