|
US$399.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 31014-2014: Acoustics -- Laboratory methods of underwater target strength measurement
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 31014-2014 | English | 399 |
Add to Cart
|
3 days [Need to translate]
|
Acoustics -- Laboratory methods of underwater target strength measurement
| Valid |
GB/T 31014-2014
|
Standard similar to GB/T 31014-2014 GB/T 8016 Basic data | Standard ID | GB/T 31014-2014 (GB/T31014-2014) | | Description (Translated English) | Acoustics -- Laboratory methods of underwater target strength measurement | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | U67 | | Classification of International Standard | 17.140 | | Word Count Estimation | 17,152 | | Date of Issue | 9/3/2014 | | Date of Implementation | 2/1/2015 | | Quoted Standard | GB/T 3947-1996 | | Regulation (derived from) | People's Republic of China Announcement of Newly Approved National Standards No. 21 of 2014 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Standard specifies the laboratory measurement of underwater acoustic target strength measuring device, the measurement conditions, measured steps. This Standard applies to the frequency of laboratory measurements at 1 kHz ~ 500 kHz range underwater a | GB/T 31014-2014: Acoustics -- Laboratory methods of underwater target strength measurement---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.
Acoustics. Laboratory methods of underwater target strength measurement
ICS 17.140
U67
National Standards of People's Republic of China
Acoustic underwater acoustic target strength measurements laboratory methods
Issued on. 2014-09-03
2015-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard was proposed by the Chinese Academy of Sciences.
This standard by the National Standardization Technical Committee of Acoustics (SAC/TC17) centralized.
This standard drafting unit. China Shipbuilding Industry Corporation seventh fifteen Research Institute, Chinese Academy of Sciences Institute of Acoustics.
Drafters of this standard. easy to swallow, Zufeng Lei, Zhao, Li water, Yuan Fenghua, MO Kihei.
Acoustic underwater acoustic target strength measurements laboratory methods
1 Scope
This standard specifies the laboratory measurement of underwater acoustic target strength measuring device, the measurement conditions, measured steps.
This standard applies to the frequency of laboratory measurements at 1kHz ~ 500kHz range underwater acoustic target strength.
Note. The target strength of large underwater acoustic targets using scale model measurements, see Appendix A.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 3947-1996 Acoustics Terminology
3 Terms and Definitions
GB/T 3947-1996 and defined the following terms and definitions apply to this document.
3.1
Scattering [acoustic] scattering
Sonic in any direction irregular reflection, refraction or diffraction.
Note. The incident and scattered sound waves in the opposite direction is called the scattering echoes or backscattered waves.
3.2
Target strength targetstrength; TS
Acoustic backscatter from the target center at 1m equivalent sound intensity level incident plane wave sound intensity level of the difference.
Note. The sound intensity level is limited to the free exercise of wave conditions, then the sound intensity level and sound pressure level equal to, or only the sound pressure level can be measured directly.
[GB/T 3947-1996, the definition 7.33]
3.3
Scale model scalemodel
The goal reduced by a certain percentage after model made.
4 Symbol
The following symbols apply to this document.
A --- chirp signal amplitude in volts (V);
am --- maximum linear shrinkage ratio in the model projection plane perpendicular to the direction of the incident wave, in meters (m);
a1 --- maximum emission line of the transducer radiating in meters (m);
Maximum line of a2 --- hydrophone in meters (m);
a3 --- the biggest target in the line of projection plane perpendicular to the direction of the incident wave, in meters (m);
a4 --- the biggest target in the line of the projection surface acoustic axis direction, in meters (m);
cw --- water medium speed of sound in meters per second (m/s);
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 31014-2014_English be delivered?Answer: Upon your order, we will start to translate GB/T 31014-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 31014-2014_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 31014-2014_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+ countriesQuestion 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 [email protected]. 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.
|