High-precision dynamic imaging simulator for space target

Abstract

The invention discloses a high-precision dynamic imaging simulator for a space target. The high-precision dynamic imaging simulator comprises two half-field display systems, an optical splicing system and a projection imaging system, wherein each of the half-field display systems comprises a display content generation system, a display driving system, a backlight illumination system, liquid crystal light valves and a liquid crystal light valve control system; the optical splicing system comprises a splicing lens group, a prism supporting structure and a mirror supporting structure flange; the projection imaging system comprises an object space telecentric projection lens, a lens mounting flange, a lens group fixing flange, a distance adjusting barrel and a locking device; the high-precision design of a large field of view is completed by the object space telecentric projection lens through matching of a small aperture and a short exit pupil distance, two liquid crystal light valves are fixedly arranged on splicing surfaces of the splicing lens groups, and through layout of effective display surfaces of the two liquid crystal light valves, the two liquid crystal light valves are spliced to a full field of view through the splicing lens groups; and the backlight illumination system and the liquid crystal light valves are integrally designed. According to the invention, the high-precision dynamic target simulation can be realized at a variable distance.

Description

technical field [0001] The invention belongs to the technical field of physical simulation, and relates to a high-precision dynamic imaging simulation device for space targets. Background technique [0002] Space dynamic target simulation technology is the imaging physical simulation target simulation equipment required for the study of space optical sensors. It mainly simulates the real-time position and other physical properties of the target detected by the sensor through the method of optical imaging. The use of general analog target imaging positions is relatively common. [0003] Space targets are divided into relatively static targets and relatively moving targets. Relatively static targets can be realized by imaging with a fixed target through an optical system, while the simulation of a dynamic target generally uses a display device to dynamically image the target, and the resulting dynamic image is captured by the optical system. Throw to desired distance. [000...

AI Technical Summary

Problems solved by technology

The display devices used by the above star simulators are all about 1000 pixels, so they are medium-precision star simulators that fail to achieve high-precision simulation. The main reason for not achieving high-precision simulation is that the resolution of the display device is not enough. The resolution of the display device is about 1000 pixels, or a long strip display device with 2000×1000 type, while the dynamic star simulator generally requires a square field of view display

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