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