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25 June 1991, Volume 11 Issue 03 Previous Issue    Next Issue

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DEVELOPMENT AND APPLICATION OF CHINESE SATELLITES Min Guirong (CAST) 1991, 11 (03):  1-6.  Abstract ( 1756 )   Save This paper summarizes the way along which Chinese satelliteshave been developed,and shows that the main kinds of satellites which weredeveloped over the past twenty years in China are the application satellites.The main objectives are the satellites,such as communications,remote sen-sing and scientific experiment satellites in earth orbits at different height.The number of China's satellites was not large,but the step of developingwas large,and satellites and ground support facilities have been developedthrough self-reliance.In the meantime,the article presents the applications of Chinese satellitesin education,broadcasting,communications,natural resources,mapping,meteorology,scientific experiment,national defence and etc.In the end of this paper,the development prospect of chinese satelliteapplication in the 1990's is pointed out. Related Articles | Metrics

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APPLICATION OF SATELLITE IN TV BROADCASTING Qi Huailiang Lü Lin (Beijing Institute of Post and Telecommunication) 1991, 11 (03):  7-11+6.  Abstract ( 2000 )   Save In the past ten years,the technique of satellite broadcasting hasbeen developed rapidly.In this paper,the frequency band used in satellitebroadcasting and the recieving forms are presented.And the regulation ofsatellite broadcasting,main devices used in direct broadcasting satellite(DBS)system,miniaturization toothed of earth recieving system and the transmi-ssion format of TV signals in satellite broadcasting are described.The gen-eral situation about the development of foreign direct broadcasting TV isalso summarized in the end of this paper. Related Articles | Metrics

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ENVIRONMENTAL POLLUTION IN JIAOZHOU BAY——ANALYSIS OF SATELLITE REMOTE SENSING DATA Zheng Quanan Zhang Xinmei Wu Longye Xiu Shumeng Ma Xiaobing (The First Institute of Oceanography State Oceanic Administration) Xu Hongkai (Qingdao Institute of Environmental Protection Science) 1991, 11 (03):  12-17+76.  Abstract ( 1792 )   Save The analysis of the pictures of Landsat TM and the photosof our land resources satellite camera and the on-the-spot investigationshow that the pollution caused by industrial waste water on the easterncoast of Jiaozhou Bay is very serious.The main pollution sources concentrateon along the Haipo river,Licun river,Loushan river and Changkou Distri-ct coast.The width of polluted water area is up to 4～7km,and it spreadsto the sea outside the bay with down stream.The area of polluted region“White Sands” caused by the drained wastes from Qingdao Alkali Factoryamounts to 0.53km~2 at present.The atmosphere in Qingdao City is seriouslypolluted,where the smoke plume is up to 14km wide,drifting down thewind and reaching 30kin far away,which will certainly bring about the di-saster such as acid rain. Related Articles | Metrics

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APPLICATION OF CHINESE LAND RESOURCES SATELLITE IN GEOLOGICAL STUDIES Wang Zhimin (Center for Remote Sensing in Geology,MGMR) 1991, 11 (03):  18-23.  Abstract ( 1731 )   Save On the basis of the mathematical model developed,the applica-tion of the Chinese Land Resources Satellite as well as other remote sensingdata in evaluation of regional water resources are described in this paper.In addition,the use of the Chinese Land Resources Sateliite in land utiliza-tion investigation,cartography,and exploration of iron,uranium and petro-leum resources are discussed in detail.The economic and social benefits havebeen achieved through those studies. Related Articles | Metrics

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FAST ACQUISITION OF INBOUND SIGNAL UNDER LOW SIGNAL—TO—NOISE RATIO CONDITION IN RDSS SYSTEM Ye Fei Lu Wenfu (Beijing Institute of Information Engineering) 1991, 11 (03):  24-35.  Abstract ( 1673 )   Save The paper presents an overall analysis on various kinds ofpossible methods of fast acquisition in the view of the whole system. Precisemathematical models have been established and used to analyse the influencesof PN pattern,Gaussian noise and Doppler frequency shift on the perfor-mance of PN code aquisition.Computer-aided analysis gives some quantitativeand qualitative results which indicate that SAW matched filter is the bestchoice.Theoretical analysis is also given to the recommended RDSS standardinbound PN pattern.One possible fast acquisition method has been conceivedaccording to this pattren. Related Articles | Metrics

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APPLICATION AND DEVELOPMENT OF SATELLITE REMOTE SENSING TECHNIQUE IN AGRICULTURE Liu Haiqi (Department of Agriculture Ministry Agriculture Planning) 1991, 11 (03):  36-41.  Abstract ( 2299 )   Save This paper describes briefly the important achievements andsocial、economic and ecological beneficial results in agriculture using remotesensing technique,and raises the point that it is necessary to use remotesensing technique in surveying,monitoring and regionalizing of nationalagricultural resourses and other managering fields.The rapid development,including introduction,digestion,absorption and application of remotesensing technique,is presented in the paper.It also elaborates thedifficulties and complexity of remote sensing technique application inagriculture in our country and puts forward to build a multi-level systemof agricultural resources monitoring using remote sensing technique atpresent and in future. Related Articles | Metrics

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APPLICATIONS OF METEOROLOGICAL SATELLITE IN MONITORING HEAVY RAIN AND SEVERE CONVECTIVE SYSTEMS,AND VERY—SHORT RANGE WEATHER FORECASTING Fang Zongyi (Satellite Meteorology Center,State Meteorological Administration) 1991, 11 (03):  42-47.  Abstract ( 2064 )   Save This paper presents simply meteorological satellite,espceiallythe action,position and applications of geostationary meteorologicalsatellite imagery in monitoring and forecasting two kinds of disastrousweather systems,such as severe convective storms(thunderstorm wind andhail)and heavy rain.Some results of studies about disastrous weathersystems above using satellite data are briefly shown.At last,theimportance and status of monitoring and estimating precipitation usingmeteorological satellite are discussed. Related Articles | Metrics

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OUTLINE OF SYSTEM DESIGN OF SATELLITE COMMUNICATIONS SYSTEM FOR BANK DATA Wu Mulong (China Electronics Information Industry Group Company[CEC]) 1991, 11 (03):  48-51.  Abstract ( 1621 )   Save Abstract This paper gives a general introduction to the data satellitecommunication system serving People's Bank of China and other commercialbanks,including engineering scale,traffic quantity estimation,technicalsystem,hardware arrangement and software support. Related Articles | Metrics

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PIGGYBACK EXPERIMENT OF GaAs SINGLE CRYSTAL GROWTH IN CHINESE RECOVERABLE SATELLITE Huang Liangfu Tan Xiaochen Zhang Zhongli Xie Xie Xi Risheng He Ping (Lanzhou Institute of Physics,Chinese Academy of Space Technology) 1991, 11 (03):  52-55+51.  Abstract ( 1959 )   Save The first Chinese space piggyback experiment of GaAs singlecrystal in microgravity environment by utilizing Chinese recoverable satelliteis described.The essential principle of the experiment,structure of singlecrystal furnace and the main outcomes are presented. Related Articles | Metrics

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SYNTHETIC ANALYSIS OF REMOTE SENSING INFORMATION AND MAPPING SYSTEM Fu Suxing 1991, 11 (03):  56-64.  Abstract ( 1800 )   Save With the application of synthetic analysis of multi-variable,this paper focuses the RS(Remote Sensing)research on information source ofmapping,study object,and geoscience analysis.And,the author gives a trystudy on thematic mapping with the help of geoscientific investigation andprinciples of geography and biology,which is in the author's opinion,theessential part for improving the quality and precision of cartography.In addi-tion,this paper introduces the application of geographic parameters to RScomputer-assisted thematic cartography,which is may be the bottleneck ofimproving the precision of classification and mapping assisted by computer.In the last part of this paper,the structure of mapping system and its pro-cessing flow are discussed. Related Articles | Metrics

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RISE OF SATELLITE TELEVISION EDUCATION IN CHINA AND ITS DEVELOPING TREND Xing Yi (CETV) 1991, 11 (03):  65-68.  Abstract ( 1843 )   Save The author reviews the history and development of televisioneducational broadcasting in China,and describes in detail the rise of satel-lite television education with his own experience.On the basis of summingup,the author discusses two key points on the efficiency and quality oftelevision production for education in the future.The article also examinesa wide range of practical experience and data which is interesting to thosewho work in the same field. Related Articles | Metrics

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APPLICATION OF SPACE CALAMITY MONITORING SYSTEM Yang Zhaode Xiong Yanling (Chinese Acadmy of Space Technology) 1991, 11 (03):  69-74.  Abstract ( 1580 )   Save This paper summarizes the natural disasters which made catas-trophe and harm to our country,and studies the common characteristics,paragenesis characteristics and global characteristics of disasters.The paperalso analyses the space apolication system for disaster relief and its denefits. Related Articles | Metrics