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GB/T 39085.2-2020 English PDF

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GB/T 39085.2-2020: Ships and marine technology - Marine radar reflectors - Part 2: Active type
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 39085.2-2020	English	494	Add to Cart	4 days [Need to translate]	Ships and marine technology - Marine radar reflectors - Part 2: Active type	Valid	GB/T 39085.2-2020

Standard similar to GB/T 39085.2-2020

GB/T 43869 GB/T 39088

Basic data

Standard ID	GB/T 39085.2-2020 (GB/T39085.2-2020)
Description (Translated English)	Ships and marine technology - Marine radar reflectors - Part 2: Active type
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	U65
Classification of International Standard	47.020.70
Word Count Estimation	26,238
Date of Issue	2020-09-29
Date of Implementation	2021-04-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration

GB/T 39085.2-2020: Ships and marine technology - Marine radar reflectors - Part 2: Active type

---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.
Ships and marine technology - Marine radar reflectors - Part 2.Active type ICS 47.020.70 U65 National Standards of People's Republic of China Radar reflectors for ships and marine technology Part 2.Proactive Part 2.Activetype (ISO 8729-2.2009, IDT) 2020-09-29 released Implementation on 2021-04-01 State Administration for Market Regulation Issued by the National Standardization Management Committee

Preface Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Structure 3 5 Performance 4 6 Environmental requirements 5 7 Inspection and type test 5 8 Installation 12 9 Manual 13 10 Logo 13 Appendix A (Normative Appendix) Guidelines for the installation of active radar reflectors 14 Appendix B (Normative Appendix) Test method for unwanted emission of active radar reflector 16 Reference 21

Foreword

GB/T 39085 "Marine Radar Reflector for Ships and Marine Technology" is planned to be divided into the following parts. ---Part 1.Passive type; ---Part 2.Proactive. This part is Part 2 of GB/T 39085. This section was drafted in accordance with the rules given in GB/T 1.1-2009. The translation method used in this part is equivalent to ISO 8729-2.2009 "Marine Radar Reflector for Ships and Marine Technology Part 2.Main Dynamic". The Chinese documents that have a consistent correspondence with the international documents cited in this section are as follows. ---GB/T 27025-2019 General requirements for the competence of testing and calibration laboratories (ISO /IEC 17025.2017, IDT); ---GB/T 15868-1995 Global Maritime Distress and Safety System (GMDSS) marine radio equipment and maritime navigation equipment General requirements test methods and required test results (IEC 60945.1994, IDT). This part was proposed and managed by the National Marine Electrical and Electronic Equipment Standardization Technical Committee (TC531). This section was drafted. China Shipbuilding Industry Comprehensive Technology and Economic Research Institute. The main drafters of this section. Zhao Chenning, Wang Huijun. Radar reflectors for ships and marine technology Part 2.Proactive

1 Scope

Generally, small ships built of glass fiber reinforced plastic (GRP) may not be conducive to radar The reflection of the signal. In the case of radar as the main observation tool used by ships at sea, the International Maritime Organization believes that in GB/T 39085 In this part of this section, it is necessary for small ships below 150GT to be equipped with radar reflectors to enhance their radar echoes, thereby improving the ship’s radar Visibility. In accordance with the requirements of the IMOMSC.164(78) resolution, this Part specifies the minimum requirements for radar reflectors to improve the performance of small ships. Radar echo. This section provides specifications for the structure, performance, test, inspection and installation of this type of radar reflector. Note. The requirements extracted from the IMOMSC.164(78) resolution are printed in italics.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. ISO 17025 General requirements for the competence of testing and calibration laboratories (General requirements for thecompetenceoftes- tingandcalibrationlaboratories) IEC 60945 Marine navigation and radio communication equipment and systems General requirements test methods and required test results (Marine navigationandradiocommunicationequipmentandsystems-Generalrequirements-Methodsof testingandrequiredtestresults) ITU-RSM.329 Unwanted emission in the spurious domain (Unwanted emission in the spurious domain) ITU-RSM.1541 Unwanted emission in the out-of-band domain

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Radarreflector A device designed to enhance radar echoes from ships with a small radar cross-sectional area. 3.2 Active radar reflector activeradarreflector A device that uses the method of receiving, amplifying and retransmitting radar signals to enhance its echo. Note. Active radar reflectors are usually also called radar target enhancers (radartargetenhancer, RTE). 3.3 Radar cross section; RCS Equivalent to the echo area, its value is the unity of the scattered power per unit solid angle in the specified direction and the plane wave incident from the specified direction. 4π times the ratio of bit area power.

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