M50 雷达、导航、遥控、遥测、天线综合 标准查询与下载

SJ 20919-2005 均匀圆球雷达截面计算方法

本标准规定了均匀圆球对平面波散射的雷达截面计算方法。 本标准适用于在短波、超短波、微波与毫米波测量目标雷达截面时的定标。

Computational method for radar cross-sections of homogeneous spheres

ITU-R S.1714 SPANISH-2005 用于计算epfd以便于按照无线电规则第9.7A和9.7B款来协调非常大的天线的静态方法

The ITU Radiocommunication Assembly, considering that WRC-2000 adopted, in Article 22 of the Radio Regulations (RR) , equivalent power flux-density (epfd) limits to be met by non-GSO FSS systems in order to protect GSO FSS and GSO broadcasting-satellite service networks in parts of the frequency range 10.7-30 GHz.

Static methodology for calculating epfd to facilitate coordination of very large antennas under Nos. 9.7A and 9.7B of the Radio Regulations

ITU-R S.1717 FRENCH-2005 地球站天线方向图的电子数据文件格式

Although the standard reference patterns for FSS earth station antenna main-beam and side-lobe gain, such as those in Recommendations ITU-R S.465 and ITU-R S.580, are adequate for many interference studies, cases sometimes arise where more detailed gain patterns for specific antennas, or antenna types are needed in ITU-R studies. Also, the gain data for particular antennas are used in the refinement of existing reference patterns and/or the development of new reference patterns. Annex 1 to this Recommendation details a format in which gain data on specific FSS earth station antennas may be submitted by administrations in electronic form to, and includes examples.

Electronic data file format for earth station antenna patterns

ITU-R REPORT SM.2056-2005 广播电台天线方向图的空中核查

This Report describes the measurement procedures, the equipment required, and the reporting procedures for antenna radiation pattern measurements using an aircraft. This Report is independent of the airborne platform chosen and it can be used regardless of the broadcasting system used. However, additional suggestions are given for specific airborne platforms and specific broadcasting systems, so that it can be tailored to anyone's specific needs.

Airborne verification of antenna patterns of broadcasting stations

ITU-R SF.1650-1-2005 到船载移动地球站能够对5 925-6 425 MHz和14-14.5 GHz频段陆地业务产生干扰的基线的最小距离

This Recommendation provides the offshore distance beyond which earth stations on board vessels (ESVs) will not interfere with fixed service systems. The Annex provides the assumptions and methodology used in determining these distances in the frequency

The minimum distance from the baseline beyond which in-motion earth stations located on board vessels would not cause unacceptable interference to the terrestrial service in the bands 5 925-6 425 MHz and 14-14.5 GHz*** Questions ITU-R 226/9 and ITU-R 251/

ITU-R M.1639-1-2005 关于从1 164-1 215 MHz频段内的无线电导航卫星业务中的空间站的集合发射的航空无线电导航业务

This Recommendation gives the equivalent power flux-density (epfd) level which protects stations of the aeronautical radionavigation service (ARNS) from emissions of radionavigation satellites of all radionavigation-satellite service (RNSS) systems operat

Protection criterion for the aeronautical radionavigation service with respect to aggregate emissions from space stations in the radionavigation-satellite service in the band 1 164-1 215 MHz

ITU-R S.1717 SPANISH-2005 地球站天线方向图的电子数据文件格式

Although the standard reference patterns for FSS earth station antenna main-beam and side-lobe gain, such as those in Recommendations ITU-R S.465 and ITU-R S.580, are adequate for many interference studies, cases sometimes arise where more detailed gain patterns for specific antennas, or antenna types are needed in ITU-R studies. Also, the gain data for particular antennas are used in the refinement of existing reference patterns and/or the development of new reference patterns. Annex 1 to this Recommendation details a format in which gain data on specific FSS earth station antennas may be submitted by administrations in electronic form to, and includes examples.

Electronic data file format for earth station antenna patterns

ITU-T K.49-2005 (预发布)受到数字移动电话骚扰的声音终端的测试条件和性能标准

The scope of this Recommendation is to define the test level and the test methods to establish the grade of immunity of voice terminal telephones to radio disturbance generated by equipment used in digital mobile telecommunications systems.

Test requirements and performance criteria for voice terminal telephones subject to disturbance from digital mobile telecommunications systems

ARINC 718A-1-2004 Mark 4空中交通控制异频雷达收发机

Mark 4 Air Traffic Control Transponder (ATCRBS/Mode S)

Mark 4 Air Traffic Control Transponder (ATCRBS/Mode S)

ITU-R QUESTION 202-3/5-2004 初级雷达系统的无用发射

This Question should be brought to the attention of Radiocommunication Study Group 1, the International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA), the International Maritime Organization (IMO), the International Civil Aviation Organization (ICAO), the International Maritime Radio Committee (CIRM), and the World Meteorological Organization (WMO).

Unwanted emissions of primary radar systems

ITU-T K.54-2004 基本电源频率的抗传导测试方法和电平 系列K:抗干扰防护(研究组5)

This Recommendation presents the simplified immunity test method, the test procedure and the immunity test level for equipment with telecommunication ports connected to external telecommunication lines against conducted disturbances which can be induced o

Conducted immunity test method and level at fundamental power frequencies SERIES K: PROTECTION AGAINST INTERFERENCE Study Group 5

ITU-T K.43 AMD 1-2004 电信设备的抗扰性要求标准 系列K:抗干扰防护(研究组5)

The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU.

Immunity requirements for telecommunication equipment SERIES K: PROTECTION AGAINST INTERFERENCE Study Group 5

ITU-T K.30-2004 正温度系数(PTC)的热敏电阻 系列K:抗干扰防护(研究组5)

The purpose of this Recommendation is to provide performance requirements for PTC thermistors to ensure their satisfactory operation in telecommunication networks. This Recommendation also covers coordination of these devices fitted in the MDF and the equ

Self-restoring overcurrent protectors SERIES K: PROTECTION AGAINST INTERFERENCE Study Group 5

ITU-T K.43-2003 电信设备的抗扰性要求标准 系列K:抗干扰防护(研究组5)

This Recommendation describes the generic immunity requirements for elecommunication equipment in a given environment. It does not cover the resistibility of equipment. Specific product family Recommendations supersede this Recommendation.

Immunity requirements for telecommunication equipment SERIES K: PROTECTION AGAINST INTERFERENCE Study Group 5

ITU-T K.34-2003 电信设备电磁环境条件的分类.快速瞬变及射频现象 系列K:抗干扰防护(研究组5)

The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications.

Classification of electromagnetic environmental conditions for telecommunication equipment Basic EMC Recommendation SERIES K: PROTECTION AGAINST INTERFERENCE Study Group 5

ITU-T K.45-2003 接入网设备耐过电压和过电流的能力 系列K:抗干扰防护(研究组5)

This Recommendation specifies resistibility requirements and test procedures for telecommunication equipment installed between Telecommunication Centres and between a Telecommunication Centre and Customer's premises building.

Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents SERIES K: PROTECTION AGAINST INTERFERENCE Study Group 5

ITU-T K.21-2003 电信交换设备耐过电压和过电流的能力 系列K:抗干扰防护(研究组5). 封面说明20040116

This Recommendation specifies resistibility requirements and test procedures for telecommunication equipment which is installed in or on a customer premises building.

Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents SERIES K: PROTECTION AGAINST INTERFERENCE Study Group 5; Covering Note: January 16, 2004

ITU-T K.20-2003 电信交换设备耐过电压和过电流的能力 系列K:抗干扰防护(研究组5). 封面说明20040116

This Recommendation specifies resistibility requirements and test procedures for telecommunication equipment which is installed in a Telecommunication Centre.

Resistibility of telecommunication equipment installed in a telecommunications centre to overvoltages and overcurrents SERIES K: PROTECTION AGAINST INTERFERENCE Study Group 5; Cover Note: January 16, 2004

ITU-T K.46-2003 使用金属对称导体的电信线路的抗雷电感应浪涌的保护 系列K:抗干扰防护(研究组5)

This Recommendation gives a procedure in order to protect the telecommunication lines using metallic symmetric conductors against the overvoltages and overcurrents imposed on the lines due to nearby lightning discharges. For lines exposed to direct lightn

Protection of telecommunication lines using metallic symmetric conductors against lightning-induced surges SERIES K: PROTECTION AGAINST INTERFERENCE Study Group 5

ITU-T K.56-2003 无线基站防雷击保护 系列K:抗干扰防护(研究组16)

The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical,

Protection of radio base stations against lightning discharges SERIES K: PROTECTION AGAINST INTERFERENCE Study Group 16