Large aperture infrared radiation measurement system calibrating method and apparatus
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 inconvenient operation, poor environmental adaptability, and high cost
Active Publication Date: 2018-03-20
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 following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts 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 drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under app...
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The invention provides a large aperture infrared radiation measurement system calibrating method and apparatus. The large aperture infrared radiation measurement system calibrating method includes thesteps: utilizing a high temperature cavity type blackbody to combine with a small collimator, acquiring the calibrating data and the background data at the same time, continuously controlling and adjusting the temperature of the blackbody, acquiring the calibrating data and the background data of all the temperature points, utilizing the background data at the corresponding temperature to correctthe calibrating data of the temperature, performing linear fitting on the corrected calibrating data so as to obtain a calibrating equation of an infrared radiation characteristic measurement system,according to the optical parameters of the infrared radiation measurement system, converting the calibrating equation obtained by the small aperture into a full aperture calibrating equation so as torealize radiation calibrating of the whole optical system. The large aperture infrared radiation measurement system calibrating method utilizes the high temperature cavity type blackbody to combine with the small collimator to realize calibration of the large aperture infrared radiation measurement system in the outfield condition, can improve the calibrating mobility and reduce the calibrating cost, can simplify the operation process of calibration, and can provide a quick and convenient calibrating method for the large aperture infrared radiation measurement system.
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-diameter infrared radiation measurement system. Background technique [0002] Infrared radiation characteristic measurement is a process in which the ground-based infrared radiation measurement system is used to obtain effective images of flying targets, and the infrared images are analyzed to quantitatively invert the radiation characteristics or radiation temperature of the measurement 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 before and after the infrared radiation measurement. Therefore, calibration is an important component and step of the infrared radiation characteristic measurement. [0003]...
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Login to View More IPC IPC(8): G01J5/52
CPCG01J5/52G01J2005/0077G01J5/80
Inventor 何锋赟余毅李周常松涛孙志远
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI