GB/T 38081-2019 English PDF

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GB/T 38081-2019: Specification for level 0 data format of land observation satellite
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Basic data

Standard ID: GB/T 38081-2019 (GB/T38081-2019)
Description (Translated English): Specification for level 0 data format of land observation satellite
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V80
Classification of International Standard: 07.040
Word Count Estimation: 14,182
Date of Issue: 2019-10-18
Date of Implementation: 2020-05-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 38081-2019: Specification for level 0 data format of land observation satellite

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Specification for level 0 data format of land observation satellite ICS 07.040 V80 National Standards of People's Republic of China Terrestrial Observing Satellite Level 0 Data Format Specification Published on.2019-10-18 2020-05-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Abbreviations 2 Level 0 data content 2 6 Format Requirements 2 6.1 Signal Data File Format 2 6.2 Signal Data Frame Index File Format 3 6.3 Auxiliary Data File Format 3 6.4 On-board calibration data file format 4 6.5 Data Description File Format 4 7 naming rules 5 7.1 Foundation Name 5 7.2 Signal data file naming 6 7.3 Signal Data Frame Index File Name 6 7.4 Auxiliary data file naming 6 7.5 Star calibration data file named 6 7.6 Data Description File Name 6 Appendix A (informative) Signal Data Format Example 7 Appendix B (informative) Example 8 of auxiliary data format Appendix C (informative) Example of data description file format 9 Appendix D (informative) Level 0 data file naming example 10 Reference 11

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This standard was proposed by the Chinese Academy of Sciences. This standard is under the jurisdiction of the National Remote Sensing Technology Standardization Technical Committee (SAC/TC327). This standard was drafted. China Resources Satellite Application Center, Aerospace Star Technology Co., Ltd., Institute of Optoelectronics, Chinese Academy of Sciences, 21 Century Space Technology Application Co., Ltd. The main drafters of this standard. Xu Jianyan, Wang Xiaoyan, Yu Wenyong, Long Xiaoxiang, Wang Hongqiang, Hao Shengyong, Hu Jian, Li Ziyang, Qin Jingfang, Yan Ming.

Introduction

In recent years, China's space satellite observation satellites and ground application system technologies have developed rapidly, and environmental and disaster monitoring has been completed. Different series of terrestrial observation satellites and ground processing applications such as surveys and resource observations. However, due to the state of satellite development and ground system requirements Many factors, such as seeking, system development unit and system construction stage, cause the ground system to appear very large in level 0 data recording and exchange. The difference will affect the unified management and subsequent processing of the 0-level data of China's terrestrial observation satellites. By studying the 0-level data format defined in China's terrestrial observation satellite ground processing system, and considering the under construction high-level and resource system Class 0 data format of subsequent stars, such as signal data description, signal data storage format, auxiliary data format, and data file The naming of the parts is clearly defined, in order to achieve the standardized management of the level 0 data format, to ensure the consistency and square of the subsequent satellite level 0 data format. The usability provides a basis. The preliminary results of this standard have been in the Environment and Disaster Monitoring and Forecasting Small Satellite Constellation 1A/1B/1C Satellite, China-Brazil Earth Resources Satellite. 02C/04 star, resource No. 3 satellite 01/02 star, practice No. 9 satellite A/B star and high score No. 1/No. 2/No. 3/No. 4 satellite It has initially realized the standardized management and use of the multi-star 0-level archive format, which has played an important role in the construction and operation of terrestrial observation satellites. effect. This standard is suitable for the development of the 0-level data format interface of non-video cameras for terrestrial observation satellites in China, and will greatly satisfy the terrestrial observation satellites. Ground system, data processing research and other institutions have unified requirements for the unified management and use of level 0 data and the standardization of new processing system formats. Terrestrial Observing Satellite Level 0 Data Format Specification

1 Scope

This standard specifies the content, format requirements and document naming rules for Level 0 data from terrestrial observation satellites. This standard applies to full color remote sensors, multispectral remote sensors, hyperspectral imagers, synthetic aperture radars, etc. For the development of the 0-level data format of the remote sensor, the development of the 0-level data format of other Earth observation satellite remote sensors can be referred to.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 14950-2009 Photogrammetry and Remote Sensing Terminology GB/T 31011-2014 Remote sensing satellite raw data record and exchange format

3 Terms and definitions

The following terms and definitions as defined in GB/T 14950-2009 and GB/T 31011-2014 apply to this document. 3.1 Land observation satellite landobservationsatelite Various artificial earth satellites based on terrestrial resources and environmental observations. 3.2 Level 0 data level0data The ground system performs frame synchronization, descrambling, decoding, decompression, and decryption processing on the original satellite data, and extracts the section obtained by the remote sensor. Learn data and auxiliary data, and further organize and format the data to facilitate the preservation and subsequent processing of the data. Note. Rewrite GB/T 36301-2018, definition 3.1.3. 3.3 Signal data signaldata Data collected by the remote sensor. 3.4 Frame synchronization framesynchronization The process of frame synchronization word recognition and byte alignment on the original data to restore the original data frame format. 3.5 De-scramble descramble The inverse process of scrambling the downlink data on the star. 3.6 Deformatted format Formatting the original data to separate the signal data of each remote sensor on the star. 3.7 Unzip decompress The inverse process of compressing the signal data of the remote sensor on the star. ......

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