Infrared array radiation source calibration device and method

Abstract

The invention provides an infrared array radiation source calibration device and method. The device comprises a light source system, a collimation optical system, a plane reflector, a precise rotary table, a convergence optical system, an infrared image acquisition system, a radiation detection system, a data acquisition system, a computer and a measurement and control system. According to the infrared array radiation source calibration device and method, a method for comparing a measured infrared array radiation source with a reference black body is adopted, a first-stage standard black bodyis selected for the reference black body, the first-stage standard black body can be directly traced to a freezing point black body, the temperature stability of the first-stage standard black body is+/-0.1 DEG C/h, the emissivity can reach 0.995, the measurement accuracy is greatly improved, and the uncertainty of a measurement result is reduced; and a background source is used for eliminating background radiation, increasing the detection capability of the radiation detection system and improving the detection precision and stability of the system, the low background source is made into a hollow barrel shape, all the internal structures are welded in a sealed mode so as to allow liquid nitrogen to be injected, a cold background is provided for a detector, radiation of the environment isreduced, and the signal-to-noise ratio is improved.

Description

technical field [0001] The invention belongs to the field of optical metrology, and mainly relates to an infrared array radiation source calibration device and a calibration method thereof, in particular to an infrared array radiation source equivalent temperature, spectral radiance brightness, surface uniformity, pixel temperature rise and fall time, contrast, and minimum resolvable temperature difference Calibration of other parameters. Background technique [0002] The infrared array radiation source is a dynamic infrared radiation source, which is mainly composed of an array light-emitting unit, a computer and a control system. The computer generates visible light video images, and the control system drives the array light-emitting unit to emit light, which is consistent with the actual military target shape, temperature and speed. , scaled down infrared video targets, such as dynamic aircraft, tanks, etc., the infrared array radiation source is generally placed on the f...

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Problems solved by technology

[0004] However, there is no public report on the calibration device and method of the infrared array radiation source, and relevant technical solutions need to be proposed to realize the calibration of parameters such as the equivalent temperature, spectral radiance, surface uniformity, contrast, and minimum resolvable temperature difference of the infrared array radiation source.

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