Vacuum infrared calibration radiation response consistency method

A technology of infrared radiation and radiation response, applied in the field of vacuum infrared radiation calibration, can solve problems such as inconsistency of response, achieve the effect of improving the calibration accuracy of infrared radiation and ensuring the consistency and accuracy of radiation response

Pending Publication Date: 2021-11-12
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to overcome the inconsistency of the response of radiation transfer in the process of vacuum infrared calibration of infrare

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  • Vacuum infrared calibration radiation response consistency method
  • Vacuum infrared calibration radiation response consistency method
  • Vacuum infrared calibration radiation response consistency method

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Embodiment Construction

[0057] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below with reference to the accompanying drawings and in conjunction with the embodiments.

[0058] Such as figure 1 As shown, during the vacuum infrared calibration, the infrared radiometer receives the radiation of the cold space, the surface source blackbody and the star blackbody sequentially through the scanning mirror. The blackbody is used as the zero-radiation reference in space, and the standard surface source blackbody is the target.

[0059] Such as figure 2 As shown, the corresponding system output signal code value is obtained by changing the surface source blackbody temperature (radiation amount), and the calibration coefficient of the detection head is obtained. The temperature platinum resistance code value obtains the conversion coefficient between the platinum resistance code...

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Abstract

The invention relates to a vacuum infrared calibration radiation response consistency method. Aiming at the problem of inaccurate acquisition of a calibration coefficient and a platinum resistance conversion coefficient of each channel of an infrared radiometer caused by lens pollution, non-uniformity of temperature of a detection head and the like in a vacuum infrared calibration process, surface source black body and on-satellite black body temperature change data obtained in infrared calibration are utilized; the responsivity of the calibration state in the vacuum infrared calibration process of the infrared radiometer is subjected to radiation consistency processing, so that the radiation accuracy in the process of transmitting the radiation from the space radiation reference to the on-satellite black body is ensured; According to the vacuum infrared calibration radiation response consistency method, an infrared channel radiation calibration response consistency model is established based on an infrared radiometer linear response system, infrared radiometer single system state response stability and space radiation reference source radiation stability, infrared radiometer radiation calibration data reprocessing is realized, and the vacuum infrared radiation calibration precision is effectively improved.

Description

technical field [0001] The invention relates to the technical field of vacuum infrared radiation calibration, in particular to a method for consistent radiation response of vacuum infrared calibration. Background technique [0002] Aerospace infrared remote sensing technology is developing towards a high quantitative direction, especially in the fields of numerical weather prediction, climate change and environmental monitoring, which put forward higher and higher requirements for its quantitative level. In order to meet the traceability requirements of infrared remote sensing payloads in radiation calibration, vacuum infrared calibration before launch is one of the most important ways to ensure the accuracy of its value. Therefore, the establishment of a measurement standard method traceable to the International Unit (SI) is of great It is particularly critical to achieve high-precision calibration of infrared remote sensing payloads. [0003] At present, the vacuum infrar...

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Application Information

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IPC IPC(8): G01J5/52G01J5/00
CPCG01J5/00
Inventor 王阳钮新华张锷陈帅帅胡秀清张冬冬王向华熊千千
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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