Method for measuring infrared radiation of exoatmospheric targets with a solar diffuse reflector

By setting a diffuse reflector in front of the lens of the infrared radiation measurement equipment and adjusting its attitude angle, combined with the atmospheric correction subsystem, the target infrared radiation measurement is simplified and the measurement accuracy is improved, solving the problems of complexity and high cost of existing equipment.

CN117740161BActive Publication Date: 2026-07-07CHINESE PEOPLES LIBERATION ARMY UNIT 63636
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Patent Information

Application Number
CN202211109376.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-13
Publication Date
2026-07-07
Estimated Expiration
2042-09-13

AI Technical Summary

Technical Problem

Existing infrared radiation measurement equipment for aerial targets is complex and costly, with low measurement accuracy, making it difficult to achieve efficient target radiation correction.

Method used

A diffuse reflector is placed in front of the lens of the infrared radiation measurement equipment. By adjusting the attitude angle of the diffuse reflector and combining it with the atmospheric correction subsystem, the atmospheric transmittance of the target path and the solar path is calculated. By using the reflectance difference table and the atmospheric transmittance ratio, the equipment calibration steps are simplified and the parameter requirements of the atmospheric correction subsystem are reduced.

Benefits of technology

It simplifies the equipment calibration process, improves measurement accuracy, reduces equipment costs, and eliminates the need for a complex calibration system, enabling efficient measurement of infrared radiation from targets outside the atmosphere.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application belongs to the technical field of equipment calibration inversion, and particularly relates to a solar diffuse reflection plate correction atmospheric layer outside target infrared radiation measurement method, which is realized based on an infrared radiation measurement device, and the method comprises the following steps: step 1), a diffuse reflection plate is arranged in front of a lens of the infrared radiation measurement device; step 2), the input response gray scale D nR and the sky background response gray scale D sc of an air target are measured by using the infrared radiation measurement device; step 3), the diffuse reflection plate is adjusted to two different positions, and corresponding response gray scales D b1 and D b2 are obtained by using the infrared radiation measurement device; and step 4), the atmospheric layer outside target infrared radiation measurement result is obtained by combining the atmospheric transmittances of the sun path and the target path obtained by an atmospheric correction subsystem.
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Citation Information

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