GB/T 45740-2025 English PDF

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GB/T 45740-2025: Space debris collision warning technical requirements
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45740-2025	459	Add to Cart	4 days	Space debris collision warning technical requirements	Valid

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Basic data

Standard ID: GB/T 45740-2025 (GB/T45740-2025)
Description (Translated English): Space debris collision warning technical requirements
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V70
Classification of International Standard: 07.040
Word Count Estimation: 22,274
Date of Issue: 2025-05-30
Date of Implementation: 2025-09-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45740-2025: Space debris collision warning technical requirements

---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 07.040 CCSV70 National Standard of the People's Republic of China Technical requirements for space debris collision warning Released on 2025-05-30 2025-09-01 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 Collision Warning Technology Process 2 4.1 Emitting Collision Warning 2 4.2 On-orbit collision warning 4 5 Requirements for the main early warning process 6 5.1 Space debris dynamics data preparation 6 5.2 Track Screening 6 5.3 Conjunction Relationship Prediction 7 5.4 Collision Probability Calculation 7 5.5 Determination of collision risk level 7 5.6 Encryption monitoring requirements formulation 7 5.7 Dangerous intersection warning report released 7 5.8 Avoidance plan formulation 8 5.9 Avoidance Effect Evaluation 8 5.10 Design orbit element conversion 8 5.11 Launch Window Safety Analysis 8 5.12 Post-orbital collision risk assessment 8 Appendix A (Informative) Orbit prediction error calculation method 9 A.1 Overview 9 A.2 Statistical methods 9 A.3 Theoretical methods 9 Appendix B (Informative) Track Screening Method 10 B.1 Overview 10 B.2 Height screening 10 B.3 Geometric screening 10 B.4 Time screening 10 Appendix C (Informative) Orbital Conjunction Calculation Method 12 C.1 Overview 12 C.2 Variable Step Size Method12 C.3 Fixed-step method12 Appendix D (Informative) Collision Probability Calculation Method 13 D.1 Intersection reference strip 13 D.2 Collision Probability 13 D.3 Collision probability calculation method 13 Appendix E (Informative) Collision risk threshold determination method 15

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 and coordinated by the National Technical Committee for Standardization of Aerospace Technology and Its Applications (SAC/TC425). The drafting units of this document are. National Astronomical Observatory of the Chinese Academy of Sciences, China Institute of Space Standardization, and Beijing Institute of Tracking and Communication Technology. The main drafters of this document are. Liu Jing, Yang Xu, Li Yang, Li David, Gan Qingbo, Zhang Yao, Yu Youcheng, Wu Xiangbin, Cheng Haowen, Jiang Hai, Quan Haofang, Wang Kunpeng and Zhao Nanying. Technical requirements for space debris collision warning

1 Scope

This document establishes the technical process of space debris collision warning, specifies the specific requirements and main models of each process link, and gives Related instructions. This document applies to collision warnings for spacecraft, launch vehicles and space debris that can be monitored and catalogued, including launch collision warnings and on-orbit collision warning.

2 Normative references

The contents of the following documents constitute 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 43223-2023 Space object orbit data specification

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 space debris spacedebris All non-functional man-made objects in Earth orbit or re-entering the Earth's atmosphere. Note. Includes fragments and components of man-made objects. 3.2 cataloging The process of determining and registering orbital parameters and other information about space objects from observations and other data sources. 3.3 Before the launch of spacecraft and launch vehicles, the collision risk between the launch vehicle and other space debris in the early stage after takeoff and orbit entry is predicted. and assessment, and the process of issuing alerts. 3.4 on-orbit collision warning The process of predicting and evaluating the risk of spacecraft on-orbit collision and issuing alerts. 3.5 orbitalconjunction The process of two space objects in orbit coming into close proximity. 3.6 The process of predicting the specific parameters of two space objects when their orbits meet and assessing the risk of a collision. Note. Specific parameters include collision probability, intersection distance, intersection angle, etc. ......

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