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本標(biāo)準(zhǔn)規(guī)定了公路通信網(wǎng)在規(guī)劃、設(shè)計(jì)、組網(wǎng)時(shí)應(yīng)遵循的基本技術(shù)要求和系統(tǒng)設(shè)備的基本配置原則。本標(biāo)準(zhǔn)適用于公路通信網(wǎng)的新建和改建工程。
本標(biāo)準(zhǔn)規(guī)定了數(shù)字視頻廣播(DVB)衛(wèi)星分發(fā)系統(tǒng)交互信道通信協(xié)議的符號(hào)和縮略語(yǔ)、參考模型。本標(biāo)準(zhǔn)適用于分配給GEO衛(wèi)星業(yè)務(wù)的所有頻段的數(shù)字視頻廣播(DVB)衛(wèi)星分發(fā)系統(tǒng)交互信道通信協(xié)議。
本規(guī)范適用于新建、改建和擴(kuò)建的通信局(站)防雷與接地工程的設(shè)計(jì)。
本規(guī)范適用于新建、改建、擴(kuò)建通信電源設(shè)備安裝工程的設(shè)計(jì)。
本標(biāo)準(zhǔn)規(guī)定了衛(wèi)星數(shù)字廣播電視地球站的工作任務(wù)和設(shè)備配置的基本要求、維護(hù)管理的各項(xiàng)制度、系統(tǒng)的主要運(yùn)行技術(shù)要求、傳輸質(zhì)量定義等。本標(biāo)準(zhǔn)適用于衛(wèi)星數(shù)字廣播電視地球站,是衛(wèi)星數(shù)字廣播電視地球站運(yùn)行維護(hù)和管理的行業(yè)規(guī)范。
本標(biāo)準(zhǔn)適用于水電站、泵站、水閘等水利水電工程的通信設(shè)計(jì)。
第三條本建設(shè)標(biāo)準(zhǔn)適用于新建的采用C頻段(6/4GHz)和Ku頻段(14/12 GHz、17/11 GHz)傳輸視頻、音頻和數(shù)據(jù)業(yè)務(wù)的廣播電視衛(wèi)星地球站,改建和擴(kuò)建工程項(xiàng)目可參照本建設(shè)標(biāo)準(zhǔn)執(zhí)行。本建設(shè)標(biāo)準(zhǔn)不適用于SNG和VSAT地球站。
本規(guī)范適用于新建的大、中型水電廠和抽水蓄能電廠的通信設(shè)計(jì)。本規(guī)范規(guī)定了水電廠通信系統(tǒng)設(shè)計(jì)的基本原則及主要技術(shù)要求。
本標(biāo)準(zhǔn)規(guī)定了TDM/QPSK/FDMA(2Mbit/s)系統(tǒng)進(jìn)入國(guó)內(nèi)衛(wèi)星通信網(wǎng)時(shí)所必須滿足的一般技術(shù)要求,并與中速數(shù)據(jù)(IDR)系統(tǒng)兼容。\t它適用于衛(wèi)星固定業(yè)務(wù)(6/4GHz頻段)的通信衛(wèi)星和地球站,適用于國(guó)內(nèi)通信衛(wèi)星,租用的通信衛(wèi)星和租用轉(zhuǎn)發(fā)器組成的國(guó)內(nèi)衛(wèi)星通信系統(tǒng),適用于公用國(guó)內(nèi)衛(wèi)星通信中點(diǎn)對(duì)點(diǎn)的2Mbit/s中容量系統(tǒng)的研制和系統(tǒng)設(shè)計(jì)。
本標(biāo)準(zhǔn)規(guī)定了農(nóng)村VSAT衛(wèi)星通信的頻段、網(wǎng)絡(luò)結(jié)構(gòu)、業(yè)務(wù)范圍、網(wǎng)管功能、制式、接口、系統(tǒng)和設(shè)備的技術(shù)指標(biāo)、可用性、編號(hào)計(jì)劃、計(jì)費(fèi)、同步方式、電源、接地和防雷等技術(shù)要求。 本標(biāo)準(zhǔn)適用于靜止衛(wèi)星軌道(GSO)衛(wèi)星固定業(yè)務(wù)。適應(yīng)于國(guó)內(nèi)波束通信衛(wèi)星和租用衛(wèi)星轉(zhuǎn)發(fā)器或點(diǎn)波束組成的國(guó)內(nèi)衛(wèi)星通信系統(tǒng)。
本標(biāo)準(zhǔn)規(guī)定了傳送網(wǎng)(含光傳送網(wǎng)、微波接力傳送網(wǎng)和衛(wèi)星傳送網(wǎng))在安全等級(jí)保護(hù)、安全風(fēng)險(xiǎn)評(píng)估、災(zāi)難備份及恢復(fù)等方面的安全防護(hù)要求。本標(biāo)準(zhǔn)適用于公用電信網(wǎng)中的傳送網(wǎng)。
本規(guī)范適用于我國(guó)數(shù)字微波接力系統(tǒng)工程設(shè)計(jì)。
本規(guī)范適用于各類通信建設(shè)工程項(xiàng)目的施工、監(jiān)理、監(jiān)督檢查。本規(guī)范與有關(guān)標(biāo)準(zhǔn)(規(guī)范)相矛盾時(shí),應(yīng)按標(biāo)準(zhǔn)(規(guī)范)的相關(guān)規(guī)定辦理。
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.