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25 February 1991, Volume 11 Issue 01 Previous Issue    Next Issue

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RECURRENT FORMULAS FOR CALCULATING INCLINATION FUNCTION Yang Weilian (Beijing Institute of Spacecraft System Engineering) 1991, 11 (01):  1-6.  Abstract ( 2233 )   Save It is necessary to use the inclination function F_(imp)(i)when calcu- lating the orbit perturbation caused by spherical harmonics of the geopotential field.If one calculates the values of the functions directly using its analytical expression,enormous computating effort will be paid.In this note a set of recur- rent formulas is derived.By using these formulas one can simplify the calculation and save computation time greatly, Related Articles | Metrics

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ANALYSIS OF GEOMETRIC DISTORTIONS AND ATTITUDE ERRORS OF SATELLITE PANORAMIC IMAGES He Zhiqin Hong Peng (Beijing Institute of Satellite Information Engineering) 1991, 11 (01):  7-16.  Abstract ( 1666 )   Save This paper discusses the scales of the satellite panoramic images, the geometric distortions caused of the image by the error of the satellite attitude parameters,and the control accuracy of these parameters.Based on the mathematical methods,it deduces the mathematical formulae of the scales and the error calculation by means of the simplified model.For a given maximum positioning error,it also gives requirements of system design for the accuracy of the attitude control. Related Articles | Metrics

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LOCAL THERMAL-PROTECTION DESIGN PROGRAM OF RETURN MODULE Wu Guoting (Beijing Institute of Spacecraft System Engineering) 1991, 11 (01):  17-21+6.  Abstract ( 1887 )   Save An analysis of returned overheated structure is conducted.The results showed that outstanding objects are one of the most important causes leading structure to local overheating.The design analysis,tests and flight results of a local thermal-protection structure are introduced.The program is veri- fied to be practical and reliable. Related Articles | Metrics

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DISCUSSION ON ORBIT TRANSFER BY A SINGLE IMPULSE Li Dayao Li Dazhi 1991, 11 (01):  22-29.  Abstract ( 1451 )   Save This paper discusses the transfer from an original orbit to another new one by a single impulse,gives the necessary condition of this transfer and fixes the velocity increment of the impulse. Related Articles | Metrics

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EXISTING SITUATION AND DEVELOPMENT OF METEOROLOGICAL SATELLITE Fang Zongyi Xu Jianping (Satellite Meteorological Center,State Meteorology Administration) 1991, 11 (01):  30-39.  Abstract ( 1619 )   Save The existing situation and development of meteorological Satel- lites have been summarized.The development directions of meteorological sa- tellites have been described.Also,some suggestions on development of chi- nese meteorological satellites systems have been given. Related Articles | Metrics

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A SATELLITE ENGINEERING MANAGEMENT TOOL-WORK BREAKDOWN STRUCTURE AND WORK PACKAGE Yang Weiyuan Wei Meiling (Chinese Academy of Space Technology) 1991, 11 (01):  40-48.  Abstract ( 2669 )   Save A useful tool for satellite engineering management,i.e.the work breakdown structure(WBS)and work package,is presented in this paper. It describes in detail the usage and establishment methodology for sunmma- ry WBS,contract WBS and engineering project WBS.In addition it also explains the work package,the product tree,the product matrix,the state- ment of work and technical specification through some practical examples. At the end of this paper,the application of this tool in the satellite engine- ering management is briefly discussed. Related Articles | Metrics

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EXTRACTING SUBIMAGE FROM AN IMAGE REPRESENTED BY GD METHOD Wang Yanguang (Beijing Institute of Satellite Information Engineering)Sun Xiaohong (Computer Department,Xiamen University) 1991, 11 (01):  49-52.  Abstract ( 1718 )   Save In the application of image database and data compression,the linear quadtree methods such as GD are studied very much.Among the various image manipulations,extracting a subimage from an image is a very common one,however,GD representation is not a straightforward one to do it.In this paper,an extracting method is presented for the GD representation. Related Articles | Metrics

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STUDY OF CHARGING CHARACTERISTIC OF BF-2 COVERGLASS,GD414 AND KEVLAR Lu Yusun Li Hua (Lan Zhou Institute of Physics) 1991, 11 (01):  53-57+39.  Abstract ( 2476 )   Save Kevlar which is used in the structure of spacecraft as the ne- west material,BF-2 which is used to protect the solar cells as the coverglass and GD414 which is used to make adhesives for spacecraft,are important and necessary materials in space technology.So it is important to realize the property of electric charge accumulation on its surface in space environ- ment.In this laboratory,the experimental study of the surface inherent and the induced conductivity in the simulated space environment have been done. And the analysis of experiment results have been given. Related Articles | Metrics

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A SHAPING AMPLIFIER FOR SATELLITE Lou Binqiao (Beijing University) 1991, 11 (01):  58-62.  Abstract ( 1557 )   Save This paper describes the design and the performance of a sha- ping pulse amplifier of radiation measuring system for satellite,The power of the amplifier is 16 mW and its weight is 20g. Related Articles | Metrics

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STUDY ON THERMAL PROPERTIES OF Cd-Ni BATTERY FOR SATELLITE Hu Jingang (Beijing Institute of Spacecraft Systems Engineering) 1991, 11 (01):  63-71.  Abstract ( 1762 )   Save This paper stadies thermal properties of Cd-Ni battery by means of experiment and presents the devices for measuring thermal capacity and heat dissipation in discharge.The devices are simple and reliable.The measured re- sults and comparison to data from referencces are also given. Related Articles | Metrics