“…Infrared target simulation system can simulate the real physical characteristics of targets and is widely used in the ground test of space-borne and missile-borne detection systems. 1 , 2 , 3 As a supplement to visible-light target simulation technology, it can make up for the shortcomings of visible light and laser to a certain extent, meet the requirements of all-weather observation and multi-information collection of the target detection system, and improve the environmental adaptabilities of the target detection system. 4 Imaging contrast ratio is one of the indicators to measure the imaging quality of the rice tissue target simulator, which is related to incident light intensity, display contrast ratio of the digital micromirror device (DMD), optical transfer function of the imaging lens, and so on.…”