<title>Hardware-in-the-loop simulation using direct signal injection</title>

Study on Vignetting Simulation Method of Infrared Optical System

“…If the illumination of object plane is equality distributing, vignetting coefficient K can be calculate as the ratio of the two circularity superposition area and the area of circularity whose radius is 1 r and area is 1 S , according to geometry optics and luminosity theory. It shows as follows: 1 The two circularity superposition aera…”

“…When only calculates the block function of incidence light pupil to imaging light, the projection on incidence light pupil plane of horizontal light which gets across incidence window is a circularity whose radius is 1 r and area is 1 S . When only calculates the block function of incidence window to imaging light, the projection on incidence light pupil plane of inclined light is a circularity whose radius is 2 r and area is 2 S .…”

“…The generation of infrared simulated image is the key of injecting signal infrared imaging guiding system open-loop simulation [1]. It is necessary to simulate the typical effect of optical system and detector, such as vignetting, diffraction, various types of noise, because the generation is the infrared thermal imaging which is detected by the system.…”