Research On Space Debris Orbital Parameter Distribution Rule In LEO

With the increase of the human aerospace activities, space debris environment is seriously threatening in-orbit spacecraft safe operation. Regarding the space debris bigger than 10 , may based on the ground equipment observation establishment database, adopt the means which dodges to carry on the initiative protection; But regarding the numerous small spatial fragment, it needs to carry on the risk assessment in the establishment engineering model foundation, adopts establishing the protection shield method to protect. The space debris engineering model is the foundation of the protection design. Overseas has several space debris engineering models, our country because lacks of the survey data, not yet carries on the work in this aspect, so there is an urgent need to use the part of overseas data to do modeling research, also it lays the foundation for the establishment of independent model in China. This article is done under above background. cmThe main work of the paper is as follows:Firstly, this paper introduces the space debris environment and the hazard of space debris environment, elaborated domestic and foreign progress in the space debris modeling aspect, and has analyzed situation of our country in the space debris research area at present, points out progress disparity with the overseas.Secondly, elaborated the space debris environment model. Has given several classified method for the space debris environment model, as well as the definition of the out put parameters of the model. it introduces common used space debris environment models are presented, with emphasis elaborates on three international general three engineering models at present, has analyzed its modeling good and bad points.Thirdly, give the analysis of the current status of the lack of data in the space debris environment modeling aera,and propose the plan to carry on the search of the modeling data, and use the genetic algorithms to solve the search problem.Next, the computer implementation process of using genetic algorithms is introduced briefly. Using the search data through constructing the mathematical...