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GB/T 42636-2023 English PDF

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US$459.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42636-2023: Space data and information transfer systems - Lossless data compression
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42636-2023	459	Add to Cart	4 days	Space data and information transfer systems - Lossless data compression	Valid

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Basic data

Standard ID: GB/T 42636-2023 (GB/T42636-2023)
Description (Translated English): Space data and information transfer systems - Lossless data compression
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V75
Classification of International Standard: 49.140
Word Count Estimation: 22,246
Date of Issue: 2023-05-23
Date of Implementation: 2023-09-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42636-2023: Space data and information transfer systems - Lossless data compression

---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 49:140 CCSV75 National Standards of People's Republic of China Space Data and Information Transmission System lossless data compression (ISO 15887:2013, MOD) Released on 2023-05-23 2023-09-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbols and abbreviations1 4:1 Symbol 1 4:2 Abbreviations 2 5 Lossless source coder 2 5:1 Basic composition 2 5:2 Preprocessor Description 3 5:3 Description of Adaptive Entropy Encoder 3 5:4 Encapsulation of encoded data 3 5:5 Error Control 3 6 Preprocessor 3 6:1 Preprocessor functions 3 6:2 Predictor 4 6:3 Reference sample 4 6:4 Prediction Error Mapper 4 7 Adaptive Entropy Coder 5 7:1 Coding instructions 5 7:2 Basic Sequence (FS) 5 7:3 Sampling Split 6 7:4 Low Entropy Coding Option 6 7:5 Uncompressed 7 7:6 Size selection 7 8 Data format 7 8:1 Bit number convention 7 8:2 Lossless compression coding data structure 8 8:3 Packet format 11 9 Compressed logo package (optional) 12 9:1 Structure of Compressed Logo Package 12 9:2 CIP packet dominant header 12 9:3 Packet Data Field 13 Appendix A (informative) The structural changes of this document compared with ISO 15887:2013 16 Appendix B (informative) Technical differences between this document and ISO 15887:2013 and their reasons 17 Reference 18

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: This document is modified to adopt ISO 15887:2013 "Lossless Data Compression for Spatial Data and Information Transmission Systems": Compared with ISO 15887:2013, this document has more structural adjustments, and the structure number changes between the two documents are compared at a glance See Appendix A for the table: Compared with ISO 15887:2013, this document has many technical differences, and vertical Single lines (∣) are marked: See Appendix B for a list of these technical differences and their reasons: The following editorial changes have been made to this document: --- Deleted Chapter 1 of ISO 15887:2013 on principle definition, document structure, patented technology, etc:; --- Deleted the definition of two compound nouns in the definition of ISO 15887:2013 Appendix B (see Chapter 3); --- Change the "abbreviations" and "definitions" in Appendix B of ISO 15887:2013 to the text content (see Chapter 4); --- Added the definition of symbols used in this document (see 4:1); --- Deleted the abbreviations that did not appear in this document, and added other abbreviations used in this document (see 4:2); --- Replaced ISO 22646 with the informative referenced GB/T 39348 (see 5:5); --- Replaced ISO 22641 with the informative referenced GB/T 39351 (see 5:5); --- Replaced the title "Overview" of Chapter 2 of ISO 15887:2013 with "Lossless Information Coder" (see Chapter 5); --- Replaced "source data package" in ISO 15887:2013 with "spatial package" (see Chapter 8 and Chapter 9); --- Deleted the informative appendix A "Security, space allocation coding and patent factors" of ISO 15887:2013; --- Deleted the informative Appendix C "References" of ISO 15887:2013: Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed and managed by the National Aerospace Technology and Its Application Standardization Technical Committee (SAC/TC425): This document is drafted by: Xi'an Institute of Space Radio Technology, China Aerospace Standardization Institute, 21st Century Space Technology Application Co:, Ltd:, Beijing Institute of Electronic Engineering, Shenzhen Chace Network Information Technology Co:, Ltd:, Beijing Remote Sensing Equipment Research Institute, China Resources Satellite Application Center: The main drafters of this document: Wang Juhua, Zhang Jianhua, Zhou Yuxia, Li Li, Xiao Huachao, Yuan Suchun, Yang Xinquan, Ma Xiaodong, Qu Zexu, Li Yongfeng, Zhang Jiapeng, Wang Mingtao, Xu Dongyan, Zhang Lang, Zheng Jingjing, Gou Baowei, Li Hongjuan, Tang Wenzhuo, Yu Bingyang, Deng Xiaodong, Lin Zhengchun, He Jianjun, Wang Xiaoyan: Space Data and Information Transmission System lossless data compression

1 Scope

This document specifies the lossless data compression method for spatial data and information transmission systems, mainly including preprocessor adaptive entropy coder Lossless source coder, coded data format and compressed code stream packaging format: This document applies to lossless data compression of spacecraft platform and payload data:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date applies to this document: For undated reference documents, the latest version (including all amendments) applies to this document: GB/T 42041-2022 Aerospace Terminology Space Data and Information Transmission

3 Terms and Definitions

The following terms and definitions defined in GB/T 42041-2022 apply to this document: 3:1 entropy entropy A quantifiable measure of the average amount of information contained in each source sample: Note: Expressed in "bits/sample": [Source: GB/T 42041-2022, 3:3:32, modified] 3:2 Fundamental sequence fundamental sequence; FS A code that expresses a non-negative integer m with m "0"s followed by a "1" binary codeword: Note: A basic sequence (FS) code is the concatenation of J FS code words: 3:3 Sample splitting samplesplitting The process of separating a sampling sample into two sets of binary numbers: The separated binary numbers are adjacent, one set is low-order bits, and the other set is high-order bits: step position: [Source: GB/T 42041-2022, 3:3:93] 3:4 splitbits splitbits The low-order bits split from a binary representation of a sample:

4 Symbols and abbreviations

4:1 Symbols The following symbols apply to this document: ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42636-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42636-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 42636-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42636-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.