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ITU-R BR.1352*ITU-R BS.1352-2007 信息技术媒体交换音频项目材料的文件格式

File format for the exchange of audio programme materials with metadata on information technology media

ITU-R P.1239-2012 ITU-R 参考电离层特性

ITU-R reference ionospheric characteristics

ITU-R 456-1970 (撤回)当使用多波段的音频电报系统和频移健控时信息传输速率为1200/600比特 3Cb部分 信息传输

To avoid excessive multipath distortion, which would result when higher speed binary data streams are directly transmitted in serial form, the incoming-bit stream is converted into a number of relatively low-speed streams, which are transmitted simultaneo

(WITHDRAWN) Data Transmission at 1200/600 Bit/s Over HF Circuits When Using Multi-Channel Voice-Frequency Telegraph Systems and Frequency-Shift Keying - Section 3Cb - Data Transmission

ITU-R 719-1990 (撤回)采样频率为320kbit/s模数混合模数电路的高质量声音节目模拟信号传输.CMTT C部分.声音节目通道的传输标准和绩效目标

that the high-quality transmission of sound-programme signals over mixed analogue/digital circuits must meet the requirements of Recommendation 505 ;

(WITHDRAWN) Transmission of High- Quality Sound-Programme Analogue Signals over Mixed Analogue/Digital Circuits at 320 kbit/s - Section CMTT C - Transmission Standards and Performance Objectives for Sound-Programme Channels

ITU-R 568-1978 (撤回)用于所有电视系统的信噪比单一值.CMTT A部分.电视传输标准和绩效目标

that results of studies made by various administrations have shown the need for weighting the measured noise so that, in principle, a single value of signal-to-weighted noise ratio would result in the same subjective opinion value irrespective of the spe

(WITHDRAWN) Single Value of the Signal-to-Noise Ratio for All Television Systems - Section CMTT A - Television Transmission Standards and Performance Objectives

ITU-R IS.851-1992

ITU-R IS.847-1992

ITU-R 27-1993 HF场强度测量活动

that the Second Session of the World Administrative Radio Conference for the Planning of HF Bands Allocated to the Broadcasting Service (Geneva 1987) (WARC HFBC-87), in its Recommendation No. 514 (HFBC-87) invites the Radiocommunication Bureau to underta

HF Field-Strength Measurement Campaign

ITU-R BT.2420-2,ITU-R BT.2420-2021 高级沉浸式感官媒体系统使用场景集锦

Collection of usage scenarios of advanced immersive sensory media systems

ITU-R SM.2392-1,ITU-R SM.2392-2021 通过射频波束进行无线电力传输的应用

Applications of wireless power transmission via radio frequency beam

ITU-R M.2150-0,ITU-R M.2150-2021 2020年国际移动通信（IMT-2020）地面无线电接口的详细规范

Detailed specifications of the terrestrial radio interfaces of International Mobile Telecommunications-2020 (IMT-2020)

ITU-R SM.1708-2005 地理坐标注册线路的场强测量 问题ITU-R 214/1 和 ITU-R 215/1

Influenced by the local receiving conditions, the real values of the field strength can significantly differ from their predicted values, therefore they must be checked by measurements for establishing the radio field-strength coverage of a large area.

Field-strength measurements along a route with geographical coordinate registrations

ITU-R BT.1366-2009 根据 ITU-R BT.656、ITU-R BT.799 和 ITU-R BT.1120 建议书，在数字电视流的辅助数据空间中传输时间码和控制码

Transmission of time code and control code in the ancillary data space of a digital television stream according to Recommendations ITU-R BT.656, ITU-R BT.799 and ITU-R BT.1120

ITU-R P.1239-1997 ITU-R 参考电离层特性

ITU-R Reference Ionospheric Characteristics

ITU-R IS.1009-1993