Light adjusting-type infrared radiation calibration method

A technology of infrared radiation and calibration method, which is applied in the field of optical infrared radiation calibration, can solve the problems of low fitting response curve accuracy, large interval error, poor adaptability, etc., and achieve the effect of improving calibration accuracy, increasing calibration speed, and good adaptability

Inactive Publication Date: 2015-01-28
中国人民解放军63620部队
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  • Summary
  • Abstract
  • Description
  • Claims
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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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Below in conjunction with the examples, the specific implementation of the present invention will be further described in detail.

[0025] The present invention provides a dimming type infrared radiation calibration method, which comprises the following steps:

[0026] S1. Place the blackbody at the focal plane of the collimator to simulate an object at infinity; adjust the position of the collimator and the equipment to be calibrated so that the blackbody radiation can be incident on the equipment to be calibrated after being collimated by the collimator superior;

[0027] S2. After the temperature of the black body is stable, record the temperature of the black body, and use the calibrated equipment to continuously shoot the black body while adjusting the light transmission area of ​​the iris;

[0028] Preferably, the iris diaphragm is a rotating disc diaphragm with multiple apertures or a diaphragm with adjustable opening angle; the iris diaphragm can be located at ...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00
Inventor 姜志富麻纪庵左亚林孟凡胜冯旭辰杜芳易成龙郭毅陆胜旺王琛刘火平高洁陈建军吕久明张才华王润贤崔如晓李振海刘喜双王琳赖永松邵文波徐刚罗胜李满良陈军
Owner 中国人民解放军63620部队
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