MAIS, an Atomosphere and Background Model for Electro-Optical Simulations

摘要

A model, MAIS, for creating IR-images of objects and backgrounds with atmosphericeffects included, is presented. Images can be created using 2D-bitmaps, together with distance and altitude information. It is also possible to create images using a modularized 3D description of the scene. In the latter case, distance and altitude information for each individual pixel can be obtained from the 3D-model and used when effects of the atmosphere are added to the image. Thermal radiation from the surfaces in the 3D-model is described using a homogenous surface with a fixed radiation value or by using 2D-texture mapping. The effects of the atmosphere, modeled in MAIS, are atmospheric transmission, self-emission of thermal radiation, and turbulence. MAIS can be used in OPTSIM simulations of Electro-Optical warfare duels or in OPTSIM simulations to determine the characteristic of IR warning sensor systems. In the latter case MAIS can be used even when the system is designed for sub-pixel target detection. Furthermore, when MAIS is used in a warning sensor simulation the effect of an obscuring horizon can be considered and the position of the sensor system on the platform can evaluated.