In order to meet the demands of cost control for low cost satellites and commercial satellites,satellites cannot choose space class components,which can only choose military class components,industrial class components,and even Commercial Off-The-Shelf,COTS.In order to ensure the basic requirements of high reliability and long life,one of the effective means is to select components and appropriate redundancy design according to the application level.However,there are mutual constraints between costs,layout packaging and redundancy design.So,on the basis of the relationship between the redundancy design and application level,combined with analytic hierarchy process,which is supported for selection of components and redundancy design for low cost satellites and commercial satellites.
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