GB/T 15658-2012 English PDFUS$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 15658-2012: Method for measurements of radio noise Status: Valid GB/T 15658: Historical versions
Basic dataStandard ID: GB/T 15658-2012 (GB/T15658-2012)Description (Translated English): Method for measurements of radio noise Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: M04 Classification of International Standard: 33.100 Word Count Estimation: 12,136 Older Standard (superseded by this standard): GB/T 15658-1995 Quoted Standard: GB 4824-2004; GB/T 6113.101-2008; GB/T 7349-2002; GB/T 15709-1995 Regulation (derived from): National Standards Bulletin No. 41 of 2012 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 radio applications of radio noise classification and noise characteristics of different types of common measurement methods and data processing methods. Also specifies the measurement equipment shall meet the performance specif GB/T 15658-2012: Method for measurements of radio noise---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.Method for measurements of radio noise ICS 33.100 M04 National Standards of People's Republic of China Replacing GB/T 15658-1995 Radio noise measurement method Issued on. 2012-12-31 2013-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 15658-1995 "city radio noise measurement method." To adapt to modern technology and electromagnetic measurements Changes in the environment, this standard is modified as follows. --- Original standard name of "urban radio noise measurement method" to "radio noise measurement method." --- Chapter 1, the original standard heading "subject matter and scope" to "range", the content is changed to "This standard specifies the radio should General Methods of measurement for radio noise category and noise characteristics of different types and data processing methods. Also provides a measure The amount of equipment should meet performance targets. This standard applies to 9kHz ~ 18GHz band radio noise characteristics measuring. " --- Original standard in Chapter 2, the heading "reference standard" to "normative references" Change the contents "of this document for the following files Application is essential. For cited documents with dates, only the dated edition applies to this document. Undated Reference documents, the latest edition (including any amendments) applies to this document. "And adds four normative references. --- Original standard in Chapter 3, the title "term" to "Terms and Definitions" adds white Gaussian noise is defined, the definition of impulse noise made modify. --- Original standard Chapter 4, the title "Characterization of radio noise field strength parameters" to "measurement parameters." Original standard of 4.1, 4.2 change New standards in 4.1.1 and 4.1.2, the new parameters on the pulse noise measurement 4.2. --- Original title standard 4.1 "equivalent antenna noise factor" is changed to "WGN measurement parameters." --- Original content changes to the standard 4.1 "This standard is the equivalent antenna noise figure to represent Gaussian white noise level." --- Original standard Chapter 5, "equivalent measure antenna noise factor" delete, change the "measuring device." Adds "APD measuring receiver machine". --- Original standard Chapter 6, "the choice of site and data processing" delete, change the "measuring method", the contents of the rearranged and modified. --- Original standard Chapter 7, "measurement time" delete, change to "data acquisition and data processing." Increase the data acquisition and data processing Specific content. --- Delete the original standard Appendix A, Appendix B, Appendix C. --- Increased 2 ITU-R references. The standard proposed by the Ministry of Industry and Information Technology of the People's Republic of China. The standard by the China Communications Standards Association. This standard was drafted. State Radio Monitoring Center, Beijing Jiaotong University. The main drafters of this standard. Lijing Chun, Wen Ying, Huang, Chen Song, Zheng Na, Zhang Xiaoyan. This standard was first released in 1995, this is the first revision. Radio noise measurement method1 ScopeThis standard specifies the general classification of methods of measurement of radio noise in radio applications and different types of noise characteristics and a data processing law. Also provides the measuring equipment should meet performance targets. This standard applies to 9kHz ~ 18GHz band measuring radio noise characteristics.2 Normative referencesThe 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 4824-2004 industrial, scientific and medical (ISM) radio-frequency equipment - Electromagnetic disturbance characteristics - Limits and methods of measurement GB/T 6113.101-2008 radio disturbance and immunity measuring apparatus and methods - Part 1-1. Radio show Disturbance and immunity measuring apparatus - Measuring apparatus GB/T 7349-2002 high-voltage overhead transmission line and substation radio interference measuring method GB/T 15709-1995 AC electrified railway catenary measurement method of radiated radio interference3 Terms and DefinitionsThe following terms and definitions apply to this document. 3.1 WGN whiteGaussiannoise Over the entire frequency range of the measurement bandwidth around, having a flat power spectral density of the continuous noise signal (see ITU-R Recommendation SM.1753-2010). Gaussian white noise source is usually wired computer networks, power lines and cosmic noise. The amount of electromagnetic Gaussian white noise is Non-correlation vector, bandwidth is equal to or greater than the receiver bandwidth, power spectrum level over the measurement bandwidth increases linearly. WGN one-dimensional probability density function can be expressed as. p (x) = 1 2πσ exp [- (Xa) 2 2σ2 Where. a --- mean Gaussian white noise; σ2 --- white Gaussian noise variance. Typically, the mean AWGN communication channel a = 0. In this case, the noise variance. σ2 = D [n (t)] = E {[n (t) -E (n (t))] 2} = E {[n2 (t)} - \u200b\u200b[E (n (t))] 2 = R (0) -a2 = R (0) The average power of the noise. Pn = 12π∫ -∞ Pn (w) dw = R (0) ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 15658-2012_English be delivered?Answer: Upon your order, we will start to translate GB/T 15658-2012_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 15658-2012_English with my colleagues?Answer: Yes. 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