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卫星地球站和系统检测项目报价? 解决方案? 检测周期? 样品要求? |
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本标准规定了公路通信网在规划、设计、组网时应遵循的基本技术要求和系统设备的基本配置原则。本标准适用于公路通信网的新建和改建工程。
本标准规定了数字视频广播(DVB)卫星分发系统交互信道通信协议的符号和缩略语、参考模型。本标准适用于分配给GEO卫星业务的所有频段的数字视频广播(DVB)卫星分发系统交互信道通信协议。
本规范适用于新建、改建和扩建的通信局(站)防雷与接地工程的设计。
本规范适用于新建、改建、扩建通信电源设备安装工程的设计。
本标准规定了卫星数字广播电视地球站的工作任务和设备配置的基本要求、维护管理的各项制度、系统的主要运行技术要求、传输质量定义等。本标准适用于卫星数字广播电视地球站,是卫星数字广播电视地球站运行维护和管理的行业规范。
本标准适用于水电站、泵站、水闸等水利水电工程的通信设计。
第三条本建设标准适用于新建的采用C频段(6/4GHz)和Ku频段(14/12 GHz、17/11 GHz)传输视频、音频和数据业务的广播电视卫星地球站,改建和扩建工程项目可参照本建设标准执行。本建设标准不适用于SNG和VSAT地球站。
本规范适用于新建的大、中型水电厂和抽水蓄能电厂的通信设计。本规范规定了水电厂通信系统设计的基本原则及主要技术要求。
本标准规定了TDM/QPSK/FDMA(2Mbit/s)系统进入国内卫星通信网时所必须满足的一般技术要求,并与中速数据(IDR)系统兼容。\t它适用于卫星固定业务(6/4GHz频段)的通信卫星和地球站,适用于国内通信卫星,租用的通信卫星和租用转发器组成的国内卫星通信系统,适用于公用国内卫星通信中点对点的2Mbit/s中容量系统的研制和系统设计。
本标准规定了农村VSAT卫星通信的频段、网络结构、业务范围、网管功能、制式、接口、系统和设备的技术指标、可用性、编号计划、计费、同步方式、电源、接地和防雷等技术要求。 本标准适用于静止卫星轨道(GSO)卫星固定业务。适应于国内波束通信卫星和租用卫星转发器或点波束组成的国内卫星通信系统。
本标准规定了传送网(含光传送网、微波接力传送网和卫星传送网)在安全等级保护、安全风险评估、灾难备份及恢复等方面的安全防护要求。本标准适用于公用电信网中的传送网。
本规范适用于我国数字微波接力系统工程设计。
本规范适用于各类通信建设工程项目的施工、监理、监督检查。本规范与有关标准(规范)相矛盾时,应按标准(规范)的相关规定办理。
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.
Frequency bands have been allocated and identified for use by GSO and non-GSO FSS systems in bands shared on a primary basis with the FS. WRC-95/97 adopted a different set of provisions through No. 5.523A of the Radio Regulations (RR) to the non-GSO FSS utilizing the bands 18.8-19.3 GHz and 28.6-29.1 GHz from those provisions for non-GSO FSS utilizing bands outside these bands. This Report addresses only the 18.8-19.3 GHz band, which is referred to throughout as the 18/19 GHz band.
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.
There is a large variety of fixed-wireless systems in operation or being developed to meet future requirements. This Report provides details of the key radio system characteristics and parameters for systems in the fixed service (FS).
The passive Earth exploration-satellite service (EESS) (passive) is focussing on the reception ofnatural emissions at much lower levels that are generally used in other radiocommunicationsservices. Therefore, sensors are generally more susceptible to interference from unwanted emissionsof active services.