Calibration method and device for a large aperture infrared radiation measurement system
A technology of infrared radiation and measurement system, which is applied in the field of ground-based infrared radiation characteristic measurement, and can solve problems such as poor environmental adaptability, high cost, and inconvenient operation
Active Publication Date: 2019-08-23
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
[0004] The calibration method and device of the large-aperture infrared radiation measurement system provided by the present invention overcome the problems of inconvenient operation, high cost and poor environmental adaptability of the existing calibration technology under external field conditions. The present invention aims to use a small collimator combined with a high temperature cavity The type black body realizes the large-caliber infrared measurement system under external field conditions, improves the calibration mobility, reduces the calibration cost, simplifies the calibration operation process, and provides a fast and convenient calibration method for the large-caliber infrared radiation measurement system
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[0030] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0031] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, without having to use To describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under ap...
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The calibration method and device of the large-diameter infrared radiation measurement system provided by the present invention mainly use a high-temperature cavity-type black body combined with a small collimator to collect calibration data and background data at the same time, and then continuously control and adjust the temperature of the black body to collect all temperatures Use the background data at the corresponding temperature to correct the calibration data at the temperature, and perform linear fitting on the corrected calibration data to obtain the calibration equation of the infrared radiation characteristic measurement system. According to The optical parameters of the infrared radiation measurement system convert the calibration equation obtained from the small aperture to the calibration equation of the full aperture, so as to realize the radiation calibration of the entire optical system. Using a small collimator combined with a high-temperature cavity-type black body to realize the calibration of a large-caliber infrared measurement system under external field conditions, improve the mobility of calibration, reduce the cost of calibration, simplify the calibration operation process, and provide a large-caliber infrared radiation measurement system. A fast and convenient calibration method.
Description
Technical field [0001] The invention relates to the technical field of ground-based infrared radiation characteristic measurement, in particular to a calibration method and device for a large-caliber infrared radiation measurement system. Background technique [0002] Infrared radiation characteristic measurement is the process of using ground-based infrared radiation measurement system to obtain effective images of flying targets, and analyzing infrared images to quantitatively invert the radiation characteristics or radiation temperature of the measured target. Infrared radiation characteristic measurement In order to accurately obtain the infrared characteristic information of the target, it is necessary to calibrate the characteristics of the infrared radiation measurement system itself before and after the infrared radiation measurement. Therefore, the calibration is an important component and step of the infrared radiation characteristic measurement. [0003] Normally, before...
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IPC IPC(8): G01J5/52
CPCG01J5/52G01J2005/0077G01J5/80
Inventor 李周何锋赟余毅常松涛孙志远
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI