Analysis on Space Security Strategy of America and Russia

With the development of space technology and information technology,the application domain of space systems has become wider and wider,space security has gotten more attention of each country.The paper summarizes space security strategy,space operation doctrine and organization change of America and Russia.The paper especially analyses on space security strategy in national security,national defense strategy and national military strategy of America.On the basis of analysis,the paper concludes their experiences on space security strategy research.These experiences would use as references for our own space security strategy research.