GB/T 43971-2024 English PDF

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GB/T 43971-2024: Test specification of integrating sphere source for remote sensor calibration
Status: Valid

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Basic data

Standard ID: GB/T 43971-2024 (GB/T43971-2024)
Description (Translated English): Test specification of integrating sphere source for remote sensor calibration
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N35
Classification of International Standard: 17.180.30
Word Count Estimation: 18,199
Date of Issue: 2024-04-25
Date of Implementation: 2024-11-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 43971-2024: Test specification of integrating sphere source for remote sensor calibration

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 17:180:30 CCSN35 National Standards of People's Republic of China Integrating sphere light source test specification for remote sensor calibration Released on 2024-04-25 2024-11-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General requirements 2 4:1 Laboratory Environment Requirements 2 4:2 Main test equipment requirements 2 5 Test items and methods 2 5:1 Pre-test check 2 5:2 Spectral radiance brightness test 2 5:3 Plane radiance non-uniformity test 3 5:4 Angular radiance non-uniformity test 4 5:5 Stability Test 5 6 Test and Inspection 6 7 Test Report 6 Appendix A (Informative) Uncertainty evaluation method for integrating sphere [light source] test 7 A:1 Evaluation of measurement uncertainty of spectral radiance 7 A:2 Evaluation of measurement uncertainty of planar radiance non-uniformity 7 A:3 Evaluation of the measurement uncertainty of angular radiance non-uniformity 7 Appendix B (Informative) Test Result Examples 8 B:1 Example of spectral radiance brightness test results 8 B:2 Example of Planar Radiance Non-uniformity Test Results 8 B:3 Example of horizontal angular radiance non-uniformity test results 9 B:4 Example of stability test results 10 Reference 11

Foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting: Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents: This document was proposed by the Chinese Academy of Sciences: This document is under the jurisdiction of the National Technical Committee on Remote Sensing Technology Standardization (SAC/TC327): This document was drafted by: Hefei Institutes of Physical Science, Chinese Academy of Sciences, China Institute of Metrology, and Space Information Innovation, Chinese Academy of Sciences New Research Institute, National Satellite Meteorological Center: The main drafters of this document are: Ding Lei, Yuan Yinlin, Wu Haoyu, Zheng Xiaobing, Wu Zhifeng, Liu Zhaoyan, Li Yuan and Xu Nan: Integrating sphere light source test specification for remote sensor calibration

1 Scope

This document specifies the general requirements, test items and methods, test inspection and test results of integrating sphere light source test for remote sensor calibration: Report: This document is applicable to the output wavelength range from ultraviolet to short-wave infrared (350nm~2500nm) through built-in or external introduction: Integrating spheres with a diameter greater than or equal to 100 mm, used for remote sensor radiation calibration, with continuous spectrum testing, other integrating spheres [Light source] Test is performed as reference:

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document: For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document: GB/T 25915:1-2021 Clean rooms and related controlled environments Part 1: Classification of air cleanliness by particle concentration GB/T 36299-2018 Basic terminology for optical remote sensing radiation transmission

3 Terms and definitions

The terms and definitions defined in GB/T 36299-2018 and the following apply to this document: 3:1 integrating sphere[source] A surface light source with known spectral radiation characteristics used to calibrate remote sensors: Note: The integrating sphere [light source] has good plane uniformity, angle uniformity and stability: 3:2 spectral radiance The radiant brightness per unit wavelength: Note: The unit is watt per square meter steradianmeter [W/(m2·sr·nm)]: [Source: GB/T 36299-2018, 2:9] 3:3 spatialradiancenon-uniformity The degree of difference in radiant brightness of the integrating sphere [light source] radiation output in the normal direction at different positions within the light-emitting plane: 3:4 angular radiance non-uniformity The degree of difference in radiant brightness of the integrating sphere [light source] radiation output in different directions relative to the central normal within the light-emitting plane: Note: The optical properties of the exit surface of the integrating sphere [light source] are similar to the Lambert surface: Due to limitations such as the manufacturing process, there will be some deviations from the Lambert cosine law: 3:5 Stability Under specified working conditions, the ability of the integrating sphere [light source] to maintain the energy output unchanged within a specified time: ......

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