Light adjusting-type infrared radiation calibration method

Abstract

The invention relates to the field of optical infrared radiation calibration, and provides a light adjusting-type infrared radiation calibration method. Through adjusting radiation flux incident to a calibrated device by blackbody radiation, irradiance radiated to the image surface of a calibrated system is changed, blackbodies with two temperatures are used at the same time, or the same blackbody changes temperature for one time, radiation flux incident to the calibrated system is calculated, and an infrared radiation response curve of the calibrated device is drawn. The common mode in which the temperature of the blackbody is adjusted to calibrate the device response curve is changed, the calibration speed is fast, influences such as background, radiation of the calibrated device itself and local output can be effectively removed, and the response curve of the calibrated curve can be drawn more accurately.

Description

technical field [0001] The invention relates to the field of optical infrared radiation calibration, in particular to a dimming-type infrared radiation calibration method. Background technique [0002] Infrared radiation calibration is a key part of target infrared radiation measurement, which directly affects the accuracy of target radiation measurement. [0003] Infrared radiation measurement equipment usually uses the direct measurement of the black body or the measurement of the black body through the collimator to realize the radiation calibration of the equipment. During the calibration process, the black body needs to be heated or cooled multiple times to meet the calibration of the equipment's response curve to multiple temperature points. Generally, the temperature stabilization time of the black body heating or cooling is longer, resulting in a longer calibration time of the equipment, especially for the equipment working in the field, the working environment is d...

AI Technical Summary

Problems solved by technology

Generally, the temperature stabilization time of the black body heating or cooling is longer, resulting in a longer calibration time of the equipment, especially for the equipment working in the field, the working environment is difficult to guarantee, the adaptability is poor, and the number of calibration points obtained in the same time is small, resulting in a fitting response Curve accuracy is low, especially for intervals with poor linearity, the error is greater