Medium-wave infrared target simulation system using image space telecentric beam path

Abstract

The invention discloses a medium-wave infrared target simulation system using an image space telecentric beam path and belongs to the field of infrared target simulation. The problem that a light spot(ghost image) shown by cold light rays irradiated by a cold stop in an existing detection system on a detection face covers a target objective image, and the detection precision of the detection system is affected is solved. The target simulation system is used for generating a simulation target with the infinite the target position and is further used for making cold light rays irradiated by thecold stop in an infrared target detector return by the same way the cold light rays come through a target source, an amplified light spot is formed on the detection face of the infrared target detector, the target objective image is imaged on the detection face with the amplified light spot as the background, and the influences of the ghost image on the target objective image are eliminated. Thetarget source includes an interference target source and a to-be-detected target source. The forming process of the infrared simulation target includes that after the inference target source and the to-be-detected target source are coupled through the image space telecentric beam path, beam expanding is conducted, and therefore the infrared simulation target with the infinite target position is generated. The medium-wave infrared target simulation system is mainly used for generating the infrared simulation target.

Description

technical field [0001] The invention belongs to the field of infrared target simulation. Background technique [0002] The infrared target simulation system is an important part of the hardware-in-the-loop target simulation system, and the infrared target simulation is an indispensable link in both military and civilian fields. Due to the high cost of experiments required for physical object simulation and poor convenience, semi-physical object simulation has become the mainstream field of research in various countries, which is of great significance. [0003] Infrared targets are different from visible light targets. In the simulation process, the thermodynamic environment of the whole system is highly required. The identification, positioning and tracking of infrared targets have important research significance in both military and civilian fields. In order to realize the simulation of infrared targets in a more economical and efficient way, and at the same time facilitat...

AI Technical Summary

Problems solved by technology

However, the traditional target simulator uses an objective lens with a common structure, and the cold light radiated by the cold grating will not return along the original optical path after being reflected by the resistance array, and the reflected cold light will be directly imaged on the detector CCD, forming a bright Spot (ie: ghost image), the bright spot is smaller than the target image, and superimposed with the target image on the detector CCD, affecting the target judgment

[0007] The cold reflection problem of the system generated in the above process means that the cold light emitted by the cold aperture of the detector itself is reflected back by the surface of the lens in the infrared optical system at the front end of the detector, and refocused on the photosensitive surface, causing its An imaging defect that detects self-cold images

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