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25 February 1990, Volume 10 Issue 01 Previous Issue    Next Issue

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TECHNOLOGY APPLICATION AND DEVELOPMENT OF COMMUNICATIONS SATELLITE Qi Faten Chinese Academy of Space Technology 1990, 10 (01):  1-7.  Abstract ( 1946 )   Save The communications satellite is one of the greatestachievments of combination of space technology with communication technology.Thesatellite communication has the most noticable success in the applications.This paper reviews and describes briefly the history and present status of communica- tions satellite.Some comments and proposals on the future of china commu- nications satellite are given. Related Articles | Metrics

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TECHNICAL REQUIREMENTS FOR COMMUNICATIONS SATELLITE Min Shiquan China Broadcasting Satellite Corporation 1990, 10 (01):  8-13.  Abstract ( 1573 )   Save This paper presents 15 factors that should be considered about technical requirements for communications satellite,and describes relations between these factors and each technical requirement with examples of the domestic business communications satellite. Related Articles | Metrics

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TECHNICAL SUMMARY FOR COMMUNICATION SATELLITE Li Ye Institute of Spacecraft System Engineering 1990, 10 (01):  14-20.  Abstract ( 1731 )   Save This article is a technical summary for communication sa- tellite.Major constraining conditions in the design process of communication satellite are described.The design technoical features of onboard payload subsy- stem,attitude and orbital control subsystem,power supply subsystem,TT&C subsystem,structure subsystem and thermal control subsystem etc are also described. Related Articles | Metrics

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SELECTION OF LAUNCH TRAJECTORY FOR LAUNCHING GEOSYNCHRONOUS SATELLITE Yu Menglun 1990, 10 (01):  21-27.  Abstract ( 1818 )   Save This paper provide some analyses of launch trajectory for la- unching geosynchronous satellite.The influence of the latitude of launch pad,parking orbit,and un-coplanar launch trajectory on the selection of launnch trajectory are discussed. Related Articles | Metrics

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TWO DIFFERENT ATTITUDE CONTROL METHODS FOR GEOSTATIONARY COMMUNICATION BROADCASTING SATELLITE Lü Zhenduo Beijing Institute of Control Engineering 1990, 10 (01):  28-35.  Abstract ( 1733 )   Save In this paper,two different attitude control methods for the geostationary satellite,i.e.attitude control by satellite-ground loop and autonomous attitude control on board are discussed. Attitude controls of China satellite STW-1,STW-2 are described.Design of attitude control system for three axis stabilized spacecraft is also discussed. Related Articles | Metrics

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OPTIMAL STRATEGIES FOR ORBITAL INCLINATION CONTROL OF GEOSTATIONARY SATELLITE Li Tieshou Beijing Institute of Control Engineering 1990, 10 (01):  36-44.  Abstract ( 1878 )   Save Using inclination vector as a non-singular orbital element, engineering oriented mathematical models for inclination control of geosta- tionary orbit are established,and unified optimal strategies for inclination control both in north-south station aquisition and north-south station keeping derived.The results are applicable to the missions which require north-south station keeping accuracy of 0.05°～0.1° and have been implemented in flight control of the Chinese STW-2 satellite. Related Articles | Metrics

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THERMAL CONTROL TECHNOLOGY OF COMMUNICATIONS SATELLITES Guo Jiu rong Beijing Institute of Spacecraft Systems Engineering 1990, 10 (01):  45-51.  Abstract ( 1589 )   Save This paper briefly describes status quo and recent prospects on thermal control technology of communications satellites.A discussion of sev- eral problems on heat radiators and other thermal control elements is given. Related Articles | Metrics

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MICROWAVE TRANSPONDERS WITH SINGLE FREQUENCY CONVERSION Chen Daoming;Cui Junye 1990, 10 (01):  52-59+27.  Abstract ( 1666 )   Save This paper describes the scheme,technical specification require- ments and measured results of the microwave transponders with single fre- quency conversion for china domestic communication satellite.The major sub- units is introduced briefly. Related Articles | Metrics

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ELECTRICAL DESIGN OF ANTENNA SUBSYSTEM OF CHINESE C BAND COMMUNICATIONS SATELLITE WITH LARGE CAPACITY Guo Wenjia Xi-an Institute of Space Radio Technology 1990, 10 (01):  60-66+35.  Abstract ( 1765 )   Save A design concept for the shaped beam antenna used in the next generation of the chinese communications satellite is given in this paper. Starting from the system requirements and boundary conditions,a method to design the antenna contour pattern,which is able to match both shapes of two service zones,in relation to two different satellite positions on orbit, is described.The problems which will arise in design,and their solutions, especially the problems about the beam forming network are presented. Finally,the optimization of the antenna substsyem of the satellite on the second orbit position has been carried out,and its performance is also pre- sented. Related Articles | Metrics

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THEORETICAL AND MEASURED RESULTS ANALYSES OF EAST-WEST STATIONKEEPING FOR GEOSTATIONARY SATELLITE Xi Zheng;Tang Xisheng 1990, 10 (01):  67-70+13.  Abstract ( 1999 )   Save The article describes quantitatively and qualitatively the princi- ples of the east-west stationkeeping for geostationary satellites.Aslo given here are certain important parameters which best reflect the characteristics of the east-west drift ring.The analysis has shown that the results got both from theoretical calculation and analysis of the data from TT&C equipment are well consistent. Related Articles | Metrics