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25 April 1988, Volume 8 Issue 02 Previous Issue    Next Issue

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A NEW SATELLITE COMMAND CONTROL SYSTEM WITH EXECUTIVE ASSENTING FORMAT Ma Huiyuan 1988, 8 (02):  .  Abstract ( 1690 )   Save In accordance with technical demands of command control system of satellite and based on the command control system with information feedback checking, a new satellite command control system with execative assenting format, is presented.System model, capability of checking and monitoring, method of probability analysis and systematic performance are introduced. The applicable value based on theory, computation of engineering design and estimation for systematic performances are also given. Related Articles | Metrics

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IMAGE LOCATION AND ITS ACCURACY OF GEOSTATIONARY METEOROLOGICAL SATELLITE Zhang Renwei, Sun Huaisu (Satellite Meteorological Center) 1988, 8 (02):  .  Abstract ( 1703 )   Save The process of image navigation for geostationary meteorlogical satellite is described. The effects of uncertainties of various parameters on location accuracy are given. A new approach to landmark navigation is presented. Related Articles | Metrics

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INTEGRAL SOLUTION FOR RADIATIVE COUPLING VIEW FACTORS OF SPACE RADIANT COOLERS Han Jun, Cui Guangde, Hong Guotong, Pan Yanping (Lanzhou Institute of Physics) 1988, 8 (02):  .  Abstract ( 1706 )   Save Based on the theory of the specular image technique, a method of integral solution used to solve the view factors between the thermal coupling surfaces of a space radiant cooler is introduced. The relevant mathematical models and the frame diagram of the computer program are provided. In the end of the report, a typical calculated result which has been readily obtained by computer is given. Related Articles | Metrics

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SPECTRAL ANALYSIS OF R-R INTERVALS UNDER SOME SIMULATED EMERGENCIES OF SPACEFLIGHT Zhang Jingxue, et al. 1988, 8 (02):  .  Abstract ( 1848 )   Save Under some simulated emergencies of spaceflight conditions such as hypobaric hypoxia, breathing hypoxic oxygen, breathing pure oxygen and physical loads tests were recorded by means of R-R intervals of ECG on 16 male young subjects in the present research. Spectrograms of R-R intervals were processed and total spectral mass calculated. Analysis of heart rates by means of R-R interval spectral analysis can reflect the characteristics of cardiac rhythm. It is available for judge of the functional state of the whole body in the study of spaceflight. Related Articles | Metrics

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THE CURRENT STATUS AND PROSPECT OF INTERNATIONAL COOPERATION IN THE PEACEFUL USES OF SPACE TECHNOLOGY He Qizhi 1988, 8 (02):  .  Abstract ( 1756 )   Save This paper gives a quite detailed accout of the current status and developing trend of international cooperation in the fields of telecommunications, meterorology and remote sensing, as the most matured and widely used space technologies.It stressed that the developing countries with their existing scientific and technological basis, by training a group of space technicians and managerial personnel through international cooperation, and supported by proper ground facilities, can have a share of the benefits of space technology. Related Articles | Metrics

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STUDY OF MODELS FOR CHARGING ON SPACECRAFT SURFACE: II SURFACE ELECTRICAL POTENTIAL MODELS OF SPACECRAFT AND THEIR CALCULATION Lu Yusun 1988, 8 (02):  .  Abstract ( 1575 )   Save The charge accumulation phenomenon on the surfaces of a spacecraft at a high altitude or geosynchronous orbit would appear. It would result in high potential on the surfaces. Many models to evaluate the absolute potential on the surfaces have been presented, and discussed in detail in the article. Related Articles | Metrics

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DEVELOPMENT OF INDUCTIVE PROBE FOR MEASURING SURFACE POTENTIAL Liu Yuekwei Wang Naidong (Lanzhou Institute of physics) 1988, 8 (02):  .  Abstract ( 1483 )   Save This article describes principle and experimental method of inductive probe for measuring surface potential. The relationships of output signal with surface potential, distance and area of inductive disc are presented, and the necessary data for designig probe are provided. Related Articles | Metrics

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A KIND OF HIGHLY EFFICIENT CIRCULARLY-POLARIZED FEED FOR SHAPED BEAM ANTENNA ON SATELLITE Yan Lubin 1988, 8 (02):  .  Abstract ( 2109 )   Save The paper describes a kind of circular polarization feed, which is used for shaped beam antenna. The special problems in designing multibeam antenna, which constructs shaped beam, are discussed.Theory, experiment and the comparison between them show that the cross septum feed is suitable for solving this kind of problems. The effects of various feeds on antenna gain in coverage area are compared so that the advantage of the cross septum feed is confirmed further. Related Articles | Metrics

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SPACE RENDEZVOUS AND DOCKING TECHNIQUE Lin Laixing (Beijing Institute of Control Engineering) 1988, 8 (02):  .  Abstract ( 1866 )   Save A survey of space rendezvous and docking technique is made. The paper also discusses autonomous RVD, sensor and docking panel configuration. Related Articles | Metrics

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n:k(G)/m SYSTEM RELIABILITY Liao Jiongsheng (Beijing Institute of Control Engineering) 1988, 8 (02):  .  Abstract ( 1735 )   Save The configuration of k-out-of-n: G system with m cross-strapping stand-by components can be used to the rpeater system of communnication/broadcast satellites. It is called here n:k (G)/m system. The formula for computing reliability of this system is presented. Also a design of switch for 3:2 (G)/1 repeater system is given, by which the function of cross-strapping switchover can be implemented. Related Articles | Metrics

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PROFESSOR STEPHEN GOROVE (ED):UNITED STATES SPACE LAW, NATIONAL AND INTERNATIONAL REGULATIONS He Qizhi 1988, 8 (02):  .  Abstract ( 1626 )   Save The UNITED STATES SPACE LAW, edited by Stephen Gorove, Professor of international law of the Mississippi University of the U.S.A., and Vice President of the International Institute of Space Law are in three binders, containing United States laws, orders, reports and selected cases, as well as international and bilateral treaties concluded by the U.S.and other countries, etc.. It can be gathered from such a great variety of selected documents the abundance and depth of space law which has gone through theoretical study to the stage of applcation.With the rapid development of space activities, the states concerned have to elaborate their own corresponding laws to ensure and promote the development of space undertakings. This work carries rich and practical materials of reference value to all students of space law, space lawyers, particularly space law legislators. Related Articles | Metrics