M75 卫星广播设备 标准查询与下载

ITU-R BO.795 FRENCH-1992 减少广播卫星业务(BSS)馈线链路之间相互干扰的技术

Dans le cas oǜ des satellites copositionnés utilisent en commun un canal contrapolaire,il faut un rapport de protection de 40 dB. Une discrimination supérieure à environ 30 dB fournie par le diagramme de l'antenne de réception du satellite exige une séparation géographique des zones de service des liaisons de connexion. La discrimination est la différence entre le gain copolaire en direction de points situés dans la zone de service désirée et le gain contrapolaire en direction du point le plus rapproché de la zone de service brouilleuse.

Techniques for Alleviating Mutual Interference between Feeder Links to the BSS

ITU-R BO.794 FRENCH-1992 将降雨引起的沿馈线链路信道对广播卫星业务(BSS)性能的影响降至最小的技术

La CAG á bord des engins spatiaux rÈduit au minimum l'effet des Èvanouissements causÈs par la Pluie á la station de liaison de connexion surle rapport C/N de la liaison descendante en maintenant l'amplificateur ‡ TOP au niveau de saturation. Les CAG Èlectroniques agissent sur les canaux individuels et augmentent le gain du rÈpondeur du signal utile et de toute portion de signal brouilleur qui se trouve dans la largeur de bande du filtre du canal utile. Par consÈquent, pendant qu'il pleut á la station (ou aux stations) de liaison de connexion, l'emploi de la CAG permet le fonctionnement du rÈpondeur prËs de la saturation, mais le rapport de la porteuse utile á la portion de porteuse contrapolaire adjacente qui se trouve dans la largeur de bande du filtre du canal utile est altÈrÈ. L'emploi de la CAG a donc un effet surle rapport C/Iu contrapolaire des deux liaions de connexion don't il s'agit.

Techniques for Minimizing the Impact on the Overall BSS System Performance Due to Rain Along the Feeder-Link Path

prEN 61079-3-1991 12GHz波段卫星广播发射用接收机的测量方法.第3部分:包括一台室外装置和一台调谐装置(直接DBS接收用)的接收系统总性能的电测量

Methods of measurement on receivers for satellite broadcast transmissions in the 12 GHz band; part 3: electrical measurements of the overall performance of receiver systems comprising an outdoor unit and a tuner unit for direct DBS reception

ITU-R REPORT BO.215-7-1990 广播电视卫星业务(声音和电视)系统

This Report describes the essential elements of broadcasting-satellite system design and their relatonships. The object of the Report is to assist the system designer, frequency planner, and spacecraft and earth-station engineer in their choice of system characteristcs.

Systems for the broadcasting satellite service (sound and television)

ITU-R REPORT M.766-2-1990 全球定位系统(GPS)和其他业务频率共享的可能性

This Report refers to Question 83/8, DECIDES 4, i.e."Is the sharing of frequencies with other systems feasible, and if so, what other systems and under what circumstances?". This Report addresses the deasibility of this system sharing the 1215-1240 MHz and 1559-1610 MHz bands with terrestrial stations.

Feasibility of frequency sharing between the GPS and other services

ITU-R REPORT M.1169-1990 航空移动卫星业务中的海面多径传播效应

Multipath, especially sea surface-reflected multipath, is a significant parameter to be considered in the design of an aeronautical mobile-satellite system in the 1.5/1.6 GHz bands. The new information contained in secction 3 of this Report reconfirms the results of previous experiments and extends the multipath characterization investigation undertaken.

Sea surface multipath effects in the aeronautical mobile-satellite service

ITU-R REPORT BO.808-3-1990 空间段技术

The large coverage area possible from a satellite-borne radio transmitter, especially on a satellite in the geostationary orbit, and the supporting technology which is available at present, will make possible the establishment of a broadcasting service to the general public.

Space-segment technology

ITU-R REPORT BO.809-3-1990 卫星广播业务和卫星固定业务在11.7-12.75 GHz频段的区域间共享

As a result of different regional allocations to the fixed-satellite service and the broadcasting-satellite service in the 12 GHz band, several inter-regional sharing situations arise between these space services.

Inter-regional sharing of the 11.7 to 12.75 GHz frequency band between the broadcasting-satellite service and the fixed-satellite service

GY/T 71-1989 微波、卫星传送广播节目通路.运行技术指标等级

Channels of broadcasts transmitted via microwave and satellite Ratings for technical indices of operation

GY/T 72-1989 微波、卫星传送声音广播节目.通路运行技术指标测量方法

Channels of audio broadcasts transmitted via microwave and satellite Measurement method for technical indices of channel operations

ARMY MIL-STD-188-146-1988 卫星通信的互操作性和性能标准

The purpose of this document is to promulgate technical and engineering parameters in the form of mandatory system standards and option-objectives that are considered necessary to ensure inter-and promote compatibility and commonality among Satellite(SATCOM) systems. It is also the purpose of this document to a level of performance for SATCOM systems considered necessary to the requirements of a majority of users. The technical parameters promulgated by this document represent, in general, minimum interoperability and performance characteristics, which may be exceeded as required in order to satisfy specific requirements.

INTEROPERABILITY AND PERFORMANCE STANDARDS FOR SATELLITE COMMUNICATIONS

ITU-R REPORT BO.811-2-1986 包含建立频率分配计划和12 GHz波段的卫星广播业务轨道位置中使用的要素在内的规划要素

The first step in establishing a plan of frequency assignments and orbital positions for the broadcasting-satellite service is to select various system characteristics in the light of their implications for planning. This Report considers the fullest possible list of such characteristics which served as bases for the Plans in the band 11.7 to 12.5 GHz in Region 1, in the band 11.7 to 12.2 GHz in Region 3, and in the band 12.2 to 12.7 GHz in Region2.

Planning elements including those used in the establishment of plans of frequency assignements and orbital positions for the broadcasting-satellite service in the 12 GHz band

ITU-R REPORT BO.814-2-1986 规划卫星广播业务的极化选择上所需考虑的因素

This Report presents a summary of the factors that were considered in making this choice, both for the record, and for the planning of future systems in other bands that are, or may be, allocated to the broadcasting-satellite service. It is also suggested that the data in this Report be periodically updated.

Factors to be considered in the choice of polarization for planning the broadcasting-satellite service

ITU-R 591-1-1986 (撤回)87-108频段内的广播业务和108-136频段的航空业务的兼容性.8K部分 航空流动业务(陆地)

that high-powered FM broadcasting service operations in close geographic proximity to aerodrome facilities are at times incompatible with airborne ILS, VOR and VHF communications equipment utilizing those facilities, and that this is a widely recognized p

(WITHDRAWN) Compatibility between the Broadcasting Service in the Band of About 87-108 MHz and the Aeronautical Services in the Band 108-136 MHz - Section 8K - Aeronautical Mobile Service (Terrestrial)

ARMY MIL-HDBK-412-1981 卫星地面站现场测量及设施设计手册

This commercial item description covers brown kraft paper used for general wrapping applications.

SITE SURVEY AND FACILITY DESIGN HANDBOOK FOR SATELLITE EARTH STATIONS

GY/T 278-2014 卫星直播系统综合接收解码器（加密标清定位型）技术要求和测量方法

本标准规定了卫星直播系统综合接收解码器(加密标清定位型)的技术要求和测量方法。对于能够确保同样测量不确定度的任何等效测量方法也可以采用。有争议时,应以本标准为准。本标准适用于卫星直播系统综合接收解码器(加密标清定位型)的生产和使用。

Technical Requirements and Measurement Methods of Integrated Receiver Decoder (Encrypted SD Positioning Type) for Satellite Live Broadcasting System

GY/T 279-2014 卫星直播系统综合接收解码器（标清卫星地面双模型）技术要求和测量方法

本标准规定了卫星直播系统综合接收解码器(标清卫星地面双模型)的技术要求和测量方法。对于能够确保同样测量不确定度的任何等效测量方法也可以采用。有争议时,应以本标准为准。本标准适用于卫星直播系统综合接收解码器(标清卫星地面双模型)的生产和使用。

Technical Requirements and Measurement Methods of Integrated Receiver Decoder (SD Satellite Ground Dual Model) for Satellite Live Broadcasting System

GYJ 44-1991 卫星广播电视地球站建设标准

Specifications for construction of satellite broadcast and television earth stations