GB/T 42559-2023 English PDF

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GB/T 42559-2023: Acoustics - Measurement of phase-shifted sensitivity of interferometric fiber-optic hydrophones
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42559-2023	759	Add to Cart	6 days	Acoustics - Measurement of phase-shifted sensitivity of interferometric fiber-optic hydrophones	Valid

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Basic data

Standard ID: GB/T 42559-2023 (GB/T42559-2023)
Description (Translated English): Acoustics - Measurement of phase-shifted sensitivity of interferometric fiber-optic hydrophones
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A59
Classification of International Standard: 17.140.30
Word Count Estimation: 40,440
Date of Issue: 2023-05-23
Date of Implementation: 2023-12-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42559-2023: Acoustics - Measurement of phase-shifted sensitivity of interferometric fiber-optic hydrophones

---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.
ICS17:140:30 CCSA59 National Standards of People's Republic of China Phase shift sensitivity measurement of acoustic interferometric fiber optic hydrophone fiber optic hydrophones Released on 2023-05-23 2023-12-01 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Interference fringe counting method 2 4:1 Measuring principle 2 4:2 Measuring device 4 4:3 Measurement conditions 5 4:4 Measurement method 5 4:5 Measurement uncertainty 7 5 Bessel function ratio method 7 5:1 Measuring principle 7 5:2 Measuring device 7 5:3 Measurement conditions 8 5:4 Measurement method 8 5:5 Measurement uncertainty9 6 Phase Generation Carrier Demodulation Method 10 6:1 Measuring principle 10 6:2 Measuring device 11 6:3 Measurement conditions 12 6:4 Measurement method 12 6:5 Measurement uncertainty13 7 Differential Delay Heterodyne Demodulation Method 13 7:1 Measuring principle 13 7:2 Measuring device 14 7:3 Measurement conditions 15 7:4 Measurement method 15 7:5 Uncertainty of measurement 16 8 3×3 coupler phase demodulation method 16 8:1 Measuring principle 16 8:2 Measuring device 18 8:3 Measurement conditions 19 8:4 Measurement method 19 8:5 Measurement uncertainty 20 Appendix A (Normative) Interferometric Fiber Optic Hydrophone Bessel Function Ratio Method Interfering Light Phase Shift and Bessel Ratio Relationship Table 21 Appendix B (informative) Example of Uncertainty Analysis of Interferometric Fiber Optic Hydrophone Phase Shift Sensitivity Measurement 24 Reference 31

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 contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document was proposed by the Chinese Academy of Sciences: This document is proposed and managed by the National Acoustic Standardization Technical Committee (SAC/TC17): This document was drafted by: The 715th Research Institute of China Shipbuilding Corporation, Peking University, Changsha Shenzhitong Information Technology Co:, Ltd: Division, the 23rd Research Institute of China Electronics Technology Group Corporation, Zhejiang University, National University of Defense Technology, Institute of Acoustics of the Chinese Academy of Sciences, Beijing Science and Technology technical university: The main drafters of this document: Chen Yi, Zhou Lisheng, Zhang Min, Luo Hong, Liu Yingming, Jin Xiaofeng, Zhang Jun, Xiong Shuidong, Jia Guanghui, Mo Xiping, Wang Weiyin, Yang Liuqing, Liu Fei, Tong Haoyang, Li Wenjing, Jin Mengqun, Zhang Zili:

Introduction

Interferometric fiber optic hydrophone is a phase modulation sensor, it has anti-electromagnetic interference, high sensitivity, small size, wide frequency band response, It is easy to form large-scale arrays, and has good applications in the fields of sonar equipment development, marine environmental parameter monitoring, and marine resource development: prospect: Phase shift sensitivity is the most essential parameter reflecting the performance of interferometric fiber optic hydrophones: With the domestic research and development of interferometric fiber optic hydrophones In order to objectively evaluate the acoustic performance of interferometric fiber optic hydrophones, it is necessary to establish a phase shift sensitivity measurement method: Promote the practical process of interferometric fiber optic hydrophones: According to domestic actual situation, this document provides users with interference fringe counting method, Bessel function ratio method, phase generation carrier demodulation 5 phase shift sensitivity measurement methods, differential delay heterodyne demodulation method and 3×3 coupler phase demodulation method, are suitable for many domestic units In order to meet the measurement requirements of interfering fiber optic hydrophones, the unification of phase shift sensitivity measurement methods and values is realized: Phase shift sensitivity measurement of acoustic interferometric fiber optic hydrophone

1 Scope

This document describes the use of interference fringe counting method, Bessel function ratio method, phase generation carrier demodulation method, differential delay heterodyne demodulation method Measurement principle, measurement device, measurement conditions, measurement method and uncertainty of measurement: This document is applicable to the measurement of phase shift sensitivity of interferometric fiber optic hydrophones in the frequency range of 10Hz~20kHz: Note: When the deviation of the measurement results of the phase shift sensitivity level given by the above method exceeds 3dB, the measurement results of the interference fringe counting method shall prevail:

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 is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 3947-1996 Acoustic Terminology GB/T 4130-2017 Acoustic hydrophone low frequency calibration method GB/T 7965-2002 Measurement of Acoustic Underwater Acoustic Transducer GB/T 14733:12-2008 Telecommunications Terminology Optical Fiber Communication JJG449-2014 Octave and Fractional Octave Filters

3 Terms and Definitions

Defined by GB/T 3947-1996, GB/T 4130-2017, GB/T 7965-2002 and GB/T 14733:12-2008 and the following The following terms and definitions apply to this document: 3:1 A hydrophone made of optical fiber as a sensitive element and using the principle of light interference: Note: Its characteristic is that the phase shift of the interference light is proportional to the change of the sound pressure in the sound field: 3:2 The phase difference between the sensing arm of the interferometric fiber optic hydrophone and the interference optical signal of the reference arm caused by the external signal: 3:3 By obtaining the number of interference fringes output by the interference type fiber optic hydrophone, the interference type fiber optic hydrophone caused by the external signal is obtained: A method of interfering with the amount of phase shift of light: 3:4 The Bessel series expansion is carried out on the interference signal output by the interference fiber optic hydrophone, and the third harmonic of the signal and the fundamental wave (or the fourth harmonic and the ......

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