GB/T 28438.2-2019 English PDF

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GB/T 28438.2-2019: Objective assessment and measurement methods for coverage of digital terrestrial television broadcasting signals -- Part 2: Mobile reception
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 28438.2-2019	279	Add to Cart	3 days	Objective assessment and measurement methods for coverage of digital terrestrial television broadcasting signals -- Part 2: Mobile reception	Valid

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GY/T 268.2   GY/T 220.2   GB/T 34999   GB/T 28437   GB/T 28438.1   

Basic data

Standard ID: GB/T 28438.2-2019 (GB/T28438.2-2019)
Description (Translated English): Objective assessment and measurement methods for coverage of digital terrestrial television broadcasting signals -- Part 2: Mobile reception
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M60
Classification of International Standard: 33.160
Word Count Estimation: 14,150
Date of Issue: 2019-03-25
Date of Implementation: 2019-10-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 28438.2-2019: Objective assessment and measurement methods for coverage of digital terrestrial television broadcasting signals -- Part 2: Mobile reception

---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.
Objective assessment and measurement methods for coverage of digital terrestrial television broadcasting signals - Part 2. Mobile reception ICS 33.160 M60 National Standards of People's Republic of China Terrestrial digital television broadcasting signal coverage quality Objective assessment and measurement method Part 2. Mobile reception terrestrialtelevisionbroadcastingsignals-Part 2. Mobilereception Published on.2019-03-25 2019-10-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Coverage Quality Assessment 1 4.1 Coverage quality assessment parameters 1 4.2 Coverage Quality Level 1 4.3 Coverage Quality Assessment Method 3 4.4 Coverage Quality Level Description 3 5 Measurement method 4 5.1 Measurement Preparation 4 5.2 Measurement System 4 5.3 Measuring instruments and equipment 5 5.4 Measurement System Calibration 6 5.5 Measurement Step 6 6 Simplified assessment and measurement methods 7 6.1 Background 7 6.2 Simplified Evaluation Quality Level 7 6.3 Simplified measurement system 7 6.4 Simplified measurement method 8 Appendix A (informative) Reference Antenna Method---Measurement Calibration Antenna Factor 9 Reference 11

Foreword

GB/T 28438 "Earth digital TV broadcasting signal coverage quality objective assessment and measurement method" is divided into the following two parts. --- Part 1. Outdoor fixed reception; --- Part 2. Mobile reception. This part is the second part of GB/T 28438. This part is drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This part is proposed by the State Administration of Radio and Television. This part is under the jurisdiction of the National Radio, Film and Television Standardization Technical Committee (SAC/TC239). This section drafted by. National Press, Publication, Radio, Film and Television, Radio and Television Planning Institute. The main drafters of this section. Li Leilei, He Jianhui, Chang Jiang, Gao Yang, Feng Jingfeng, Liu Jun, Zhou Xingwei, Dai Ming, Cao Zhi, Gao Li, Zhong Shenghong, Ma Xiaopu. Terrestrial digital television broadcasting signal coverage quality Objective assessment and measurement method Part 2. Mobile reception

1 Scope

This part of GB/T 28438 specifies the mobile receiving signal coverage of terrestrial digital television broadcasting systems in accordance with GB 20600-2006. Objective assessment and measurement of quality. This section applies to mobile reception of terrestrial digital television broadcasting systems.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB 20600-2006 Digital TV terrestrial broadcasting transmission system frame structure, channel coding and modulation GB/T 26252-2010 VHF/UHF band terrestrial digital television broadcasting frequency planning guidelines GB/T 26666-2011 Implementation Guide for Terrestrial Digital Television Broadcast Transmission System

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Location probability locationprobability In the small area of measurement (typically 100m × 100m), when the signal field strength changes with the movement of the measurement position, it can reach or exceed The percentage of position over a given value. 3.2 Cliff effect Digital TV reception quickly changes from success to failure.

4 Coverage quality assessment

4.1 Coverage quality assessment parameters The main parameters for objectively assessing the quality of terrestrial digital television broadcast signal coverage are field strength, carrier-to-noise ratio and bit error rate. Field strength, noise carrying Compared with the bit error rate, the signal coverage quality of terrestrial digital TV broadcasting can be objectively evaluated. 4.2 Coverage quality level The coverage quality level of mobile reception can be divided into two categories. the coverage quality of the measurement point and the coverage of the measurement route composed of the measurement points. the amount. The coverage quality of the measurement route is calculated from the coverage quality of each measurement point on the measurement route. See 4.3 for details. ......

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