Conic cavity water bath black body source originated from absolute low temperature radiometer and its calibration method

A technology of tapered cavity and black body source, applied in the field of optical radiation measurement, can solve the problem of insufficient standard uncertainty of temperature control accuracy, effective emissivity and brightness measurement, and effective cavity of heating element temperature control accuracy and temperature field uniformity Issues such as emissivity limitations
CN1847806AInactive Publication Date: 2006-10-18ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Publication Date
2006-10-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses one kind of conic cavity water bath black body source originated from absolute low temperature radiometer and its calibration method. The black body source includes a conic cavity of 36 deg cone angle, a constant temperature water bath, and a cylindrical cavity connected to the front end of the conic cavity, and both the conic cavity and the cylindrical cavity have black inner wall. The calibration method includes the first infrared light power standard transmission based on absolute low temperature radiometer to make the power standard originated from absolute low temperature radiometer; and the subsequent setting one new optical path with increased precise diaphragm and light filter before the infrared power standard transmission detector, so as to make the infrared standard radiation brightness meter originated from absolute low temperature radiometer.
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Description

technical field

[0001] The invention belongs to an optical radiation measurement method and equipment, in particular to a high-precision tapered cavity water-bath blackbody source traceable from an absolute low temperature radiometer and a method for calibrating its radiance by using the absolute low temperature radiometer. Background technique

[0002] The application of remote sensing satellites is getting deeper and deeper into all aspects of social life. At present, many remote sensing satellites that have been launched or will be launched in my country are equipped with imaging or non-imaging infrared optical sensors for infrared remote sensing to obtain infrared images or infrared spectral information of sky, ground and ocean targets. Infrared radiation is the basic carrier of infrared remote sensing information, and the geometric and spectral resolution capabilities of infrared optical sensors on various platforms are directly related to their accurate measurement cap...

Claims

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