GB/T 34509.2-2017 English PDF

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GB/T 34509.2-2017: In-orbit field radiometric calibration for optical remote sensor of land observation satellite -- Part 2: Thermal infrared
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GB/T 43223   GB/T 32453   GB/T 34511   GB/T 34513   GB/T 34509.1   

Basic data

Standard ID: GB/T 34509.2-2017 (GB/T34509.2-2017)
Description (Translated English): In-orbit field radiometric calibration for optical remote sensor of land observation satellite -- Part 2: Thermal infrared
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V70
Classification of International Standard: 49.020
Word Count Estimation: 11,177
Date of Issue: 2017-11-01
Date of Implementation: 2018-05-01
Regulation (derived from): National Standard Announcement 2017 No. 29
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34509.2-2017: In-orbit field radiometric calibration for optical remote sensor of land observation satellite -- Part 2: Thermal infrared

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In-orbit field radiometric calibration for optical remote sensor of land observation satellite-Part 2. Thermal infrared ICS 49.020 V70 National Standards of People's Republic of China Terrestrial Observing Satellite Optical Remote Sensing Radiation on orbit Calibration method Part 2. Thermal infrared Part 2.Thermalinfrared Posted.2017-11-01 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1

4 General requirements

4.1 Radiation calibration field 1 4.1.1 Land Field 1 4.1.2 water body 2 4.2 Measurement conditions 2 4.2.1 Measuring Instruments 2 4.2.2 measure the weather conditions 2 5 Data Acquisition 2 5.1 Surface radiation characteristics parameters 2 5.1.1 temperature 2 5.1.2 radiance 2 5.1.3 Emissivity 2 5.2 Weather parameters 3 5.3 Site parameters 3 5.4 satellite and remote sensor parameters and satellite remote sensor observations 3 5.4.1 Satellite and remote sensor parameters 3 5.4.2 satellite remote sensing observations 3 6 technical process and calculation method 3 6.1 Overview 3 6.2 technical process 3 6.3 Calculation Method 4 6.3.1 Spectral radiance outside the top atmosphere 4 6.3.2 satellite sensor channel equivalent radiance 5 6.3.3 satellite remote sensor calibration coefficient 5 7 Uncertainty Analysis 5 7.1 General requirements 5 7.2 Factors of uncertainty 5 7.2.1 Calculation method based on temperature measurement 5 7.2.2 Radiation-based methods 6 7.3 Calculation of uncertainty 6 Appendix A (Informative) Radiation calibration uncertainty in orbit site analysis 7

Foreword

GB/T 34509 "terrestrial observation satellite optical remote sensor calibration orbit radiation method" is divided into three parts. --- Part 1. Visible light near infrared; --- Part 2. Thermal infrared; --- Part 3. Medium wave infrared. This section GB/T 34509 Part 2. This section drafted in accordance with GB/T 1.1-2009 given rules. This part of the National Aerospace Technology and Application Standardization Technical Committee (SAC/TC425) and focal point. This part of the drafting unit.China Resources Satellite Application Center, China Aerospace Standardization Institute, Beijing Spacecraft overall design department. The main drafters of this section. Fu Qiao Yan, Han Qijin, Wang Aichun, Qin Jingfang, Xu Cuiping, He Wei. Terrestrial Observing Satellite Optical Remote Sensing Radiation on orbit Calibration method Part 2. Thermal infrared

1 Scope

This part of GB/T 34509 specifies the general requirements of radiation calibration of terrestrial observing satellite thermal infrared remote sensors in orbit, the data obtained Take, technical process, calculation method and uncertainty analysis. This section applies to Terrestrial Observing Satellite (hereinafter referred to as satellite) thermal infrared (8μm ~ 14μm) remote sensor calibration of radiation in the orbit, its His satellite of the same type of remote sensor can be implemented by reference.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 14950 Photogrammetry and remote sensing terms GB/T 32453 Satellite Earth observation data classification rules

3 Terms and definitions

GB/T 14950 and GB/T 32453 and defined by the following terms and definitions apply to this document. 3.1 Radiometer calibration site Surface optical properties, atmospheric optical properties, meteorological conditions, topography and other conditions for satellite remote sensing orbit radiation calibration of natural or Artificial site. 3.2 Radiation calibration in orbitfield radiometriccalibration When the satellite passes the radiation calibration field, the measured optical radiation characteristics of the site are used to calculate the atmospheric radiation transmission and establish The relationship between the observed value of the satellite remote sensor and the radiance of the entrance pupil of the remote sensor.

4 General requirements

4.1 Radiation calibration field 4.1.1 land field Land field should meet the following requirements. a) The air is dry and clean during the land field test; b) the elevation of land should be greater than 1000m; c) The area of the site should not be less than the area corresponding to 10 pixels × 10 pixels of the remote sensor to be calibrated; d) site surface emissivity and temperature within the site area should be uniform; ......

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