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无源天线阵列检测项目报价? 解决方案? 检测周期? 样品要求? |
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本标准规定了防空导弹制导控制系统半实物仿真的试验目的、试验依据、试验要求、试验系统构成及项目、试验程序、试验数据处理与结果评定、试验报告。本标准适用于射频寻的制导、光学寻的制导、射频/光学复合寻的制导的防空导弹制导控制系统半实物仿真试验。
本标准规定了移动通信系统多频段基站无源天线(以下简称“天线”)的术语定义、分类、电性能、机械特性、环境条件、测量方法、检验规则以及标志、包装、运输和储存。本标准适用于工作子频段为806MHz~880MHz、870MHz~960MHz、1710MHz~1880MHz、1850MHz~1990MHz、1920MHz~2170MHz、2300MHz~2500MHz、2500MHz~2700MHz的移动通信系统多频段基站无源天线。工作于以上频段的单频段基站无源天线可参照使用。同类型其他频段的无源天线也可参照使用。智能天线不适用本标准。
本标准规定了TD-LTE数字蜂窝移动通信网智能天线的术语定义、分类、电性能、机械特性、环境条件、测量方法、检验规则以及标志、包装、运输和储存等。本标准适用于工作于室外的工作频段为1880MHz~1920MHz(band 39,称为F频段)、2010MHz~2025MHz(band 34,称为A频段)或2500MHz~2690MHz(band 41,称为D频段)的TD-LTE系统智能天线。其他类型的智能天线也可参照本标准。
本标准规定了5G大规模无源天线阵列的电性能及机械性能要求,明确电路参数指标、方向图指标以及环境可靠性试验的测试要求及方法。本标准适用于5G数字蜂窝移动通信网中非AAU设备的无源天线阵列。本标准适用于工作频段为6GHz以下,包含但不限于以下工作频段2515MHz~2675MHz、3400MHz~3600MHz和4800MHz~5000MHz。
本标准规定了5G大规模无源天线阵列电性能及机械性能的验证测量方法以及测试场地和环境要求。本标准适用于工作频段为6GHz以下,包含但不限于以下工作频段2515MHz~2675MHz、3400MHz~3600MHz和4800MHz~5000MHz。
本标准规定了用于渔业船舶的射频识别设备的组成、分类、功能、性能及安装环境的通用技术要求。本标准适用于渔业船舶所用射频识别设备的研制、选型和使用,可作为渔船射频识别系统建设的参考依据。
本规范适用于110kV~1000kV交流架空输电线路对符合相关标准要求的无线电台有源干扰影响、无源干扰影响的防护设计。
本规范适用于±400kV~±800kV直流架空输电线路对符合相关标准要求的无线电台有源干扰影响、无源干扰影响的防护设计。
This Recommendation is intended to provide a basis for the derivation and estimation of the values of electromagnetic radiation from a broadcasting station that occurs at particular distances from the transmittersite. Using such information, responsible
This Recommendation is intended to provide a basis for the derivation and estimation of the values of electromagnetic radiation from a broadcasting station that occurs at particular distances from the transmitter site. Using such information, responsible organizations can then develop appropriate standards that may be used to protect humans from undesirable exposure to harmful radiation. The actual values to be applied in any regulation will naturally depend on decisions reached by responsible health agencies, domestic and worldwide.
This Recommendation provides unwanted emission power levels for the protection of EESS (passive)satellites operating in the band 1 400-1 427 MHz from MSS feeder links (space-to-Earth) that may operate inthe band 1 430-1 432 MHz and MSS feeder links (E
This Report presents an overview of Inspections Procedures in response to Question ITU-R 225/1 regarding inspection techniques and procedures. The Question relates to how administrations proceed in planning and conducting radio station inspections. The purpose of this Report is to provide general guidelines for planning and performing inspection activities on various types of radio stations. Inspection activities often include review and verification of both technical and administrative conditions assigned to a radio station or other spectrum user. Although the term “licensed” is used throughout the document, this term can be considered here to include not only stations with licences issued by the regulatory authority, but also other authorized spectrum users (such as those operating with “licence exempt” devices like low-power radios and RF devices operating under equipment standards approval). The primary focus of this report is to consider inspections that are conducted “on-site”, by visiting the transmitter location. Included in Annexes are some specific examples in certain services, toprovide examples of howthe general guidelines can be applied. This Report should be considered a general guidance document for inspections planning.
This Report is intended to provide a single basis for the derivation and estimation of the values of electromagnetic radiation from a broadcast station that occur at particular distances from the transmitter site. Using such information, responsible agencies can then develop appropriate standards that may be used to protect humans from undesirable exposure to harmful radiation.
This Report provides information on many of the technology trends concerning radio access networks foreseen at the time of preparation of Recommendation ITU-R M.1645.
There are a number of primary space research service (SRS) allocations that can be used by deep-space missions for telecommand, telemetry, and radiometric data collection. Some of these allocations are designated specifically for deep-space SRS missions and are not available to non-deep-space SRS missions, while other allocations are available to both deep-space and non-deep-space SRS missions.
There are various types of intermodulation that can be found. In radio systems, these are manifested in a number of ways and defined as the following five types in Rec. ITU-R SM.1446
The passive radio astronomy service (RAS) is studying natural phenomena producing radio emissions at frequencies fixed by the laws of nature. Primary allocations have been made to various space services in the Earth-to-space direction such as the fixed-satellite service (FSS), radionavigation-satellite service (RNSS), mobile-satellite service (MSS) and broadcasting-satellite service (BSS) in bands adjacent or nearby to bands allocated to the RAS.