AHP evaluation of different debris-removing methods Jingying Miao1, a

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1 4th Intenational Confeence on Advanced Mateials and Infomation Technology Pocessing (AMITP 206) AHP evaluation of diffeent debis-emoving methods Jingying Miao, a School of Noth China Electic Poe Univesity, Heibei 07000, China; a @qq.com Keyods: Obit debis, AHP, aiise comaison matix, stategy Abstact. To emove the obit debis and find out an ootunity fo ivate fims, fou debis-emoving methods ae oosed fo comaison to obtain a feasible and easonable ofit stategy. AHP is used to assess the eakness and stength of the fou methods in thee distinct eiods. Accoding to the data seached analysis, e divided the futue 60 yeas into thee eiods. Consideing multile imotant influencing factos of the fou debis-emoving methods, the methods ee evaluated by using AHP and thee anks ae obtained ith facto analysis in distinct eiods. The otimal method in diffeent eiods is esented and some elated advice is obtained accoding to the esults in succession. Intoduction Sace debis is a oduction of human sace activities, esecially the objects ithout theis oiginal functions o any othe functions, including the ocket bodies and satellites, hich have finished thei ok, the ocket, the abandoned oety in the ocess of mission oeating, the debis oduced in the collision in the sace, and is the main ollution souce of the sace envionment [] [2]. Afte many collision accidents, eole have find that the consequences ill be disastous once the debis cause a collision fo thei high moving seed. As a consequence, ho to avoid and clea the obit debis become a global oblem and is deseately to be solved. Accoding to the aticle ote by Xiangan Rui [3], the ovided debis seeing measues contains ecovey, esistance attenuation,, lase and so on. illustation of emoving debis. Sace-b ate : It ill add small solid ocket motos ith ate to lage ieces of sace debis to stabilize the taget, maneuve to loe obits ith loe isk of collision. Besides, these loe ails ai esistance is lage so that the attenuation velocity of satellite obits is faste than befoe [4]. Lase: When a sace debis is aimed, the lase is send out to adiate the sace junk to gasification and boo the eaction foce to dive the sace junk to be buned in the atmoshee [4]. Cube Sail: Using sun ith sola enegy to mobile, the ill be send to the lo obits ith a small aicaft. The has to junk cleaning modes, fo one thing, it ill absob the debis by seading in the lo obits. Fo anothe, using the sola enegy, it can disose the debis of high obits. When it accumulates enough debis, it ill go off the satellite obits by inceasing esistance [4]. Mechan gale: Using obot "gasing" technology, ejected by launch vehicle, the gale can catch a big sace junk and ill bing the junk back to atmoshee to destoy ith itself [4]. The factos of distinct methods. Thee ae many methods to see u the obit debis, such as sace-b ate, lase, and the gale. To find out ho to assess the otimal method, e set fou time-indeendent factos in allusion to fou diffeent methods to evaluate it, fo examle, cost, isks, 206. The authos - Published by Atlantis Pess 44

2 benefits, as ell as technology develoment. Thee eiods. With othe eseached data, afte nume analysis, accoding to nume values la, e divided continuous time into thee eiods. Because the nume values changes slightly fo being limited in 0., e think this eatition is available. The cost of these methods contains the oductive cost and the eaied cost and is elated to time. Accoding to the aveage values e have find, the cost, obability, benefits, benefits ecovey, oject of sace-b ate, lase, and the gale is as follos: Table The data in the fist eiod Cost/0000 dollas The isks obability ecovey. Poject sace-b ate lase gale Table 2 The data in the inteim eiod Cost/0000 dollas The isks obability ecovey. Poject sace-b ate lase gale Table 3 The data in the ue eiod Cost/0000 dollas The isks obability ecovey. Poject sace-b ate lase gale

3 AHP evaluation. Evaluation ocess: The oblem of finding out the otimal method is divided into thee aangements as the figue shoing. The fist aangement is the aim aangement of choosing the otimal method. Fou methods ae oosed in the loest level. The middle level is the citeion aangement, hich contains cost, isks, benefits, oject and benefits ecovey. The comletive hieach stuctue of AHP evaluation is dislayed belo: Fig : hieach stuctue of AHP evaluation Using aiise comaison matix to sho eight of each indicato, the otimal method evaluation facto judgment matix A, cost, isks, benefits, oject, benefits ecovey judgment matix B, B2, B3, B4, B 5 ee as follos. We take the fist eiod as examle thee: A = B = B2 = () (2) (3)

4 Conclusion of AHP: B3 = B4 = B5 = Table 4 The esults of AHP in the fist eiod name Scoes Rank sace-b ate lase gale Table 5 The esults of AHP in the inteim eiod name Scoes Rank sace-b ate lase gale ( Table 6 The esults of AHP in the ue eiod name Scoes Rank sace-b ate lase gale (4) (5) (6) 444

5 Summay In a conclusion, in the fist eiod and the inteim eiod, lase is the best investment oject, the est of the ode is the, sace-b ate and the gale. Hoeve, the become the best choice in the ue eiod, the est is lase, sace-b ate and the gale. With analyzing about the data, e infe the eason hy lase is the best ogamme is the oking-time of lase is moe than othes and the eached mass of the debis is heavie than the est. As fo the, hy it become the best oject is that its of oking is shote and the load caacity become bigge ith the develoment of the technology. Meanhile, accoding to ou estimate data, the oductive cost of is loe than befoe, but the oductive cost of lase is highe than befoe. Futhemoe, the eck obability of is only 0.0, hich is loe than the lase. Fo high inut oject like sace industy, the isks obability have a fa-eaching imact. Accoding to assess of the judgment matix befoe, the exets cae isks moe. Similaly, the lo level of the sace-b ate and the gale is thei high isks. As a consequence, if the govenments ant to have moe fims to invest these lo level ojects, the govenments need to invest moe to the technology develoment to decease the isks. Refeences []htt://baike.baidu.com/link?ul=y_tovmbu9rzysxfhjeixccoimwnvn0h4dej-tagn-b 6MenJ7vbcksWgWJK04tjUCTc6K9H5OB6aak_ [2] 7B3TORxa4PU58lkSScWNeYhY3MVBSL3amSFxo [3] Rui Xiang Wan, Zhang Taian. Cuent situation of sace debis envionment, the futue and the otection of the [J]. Sacecaft engineeing, 994 (3): [4] htt://m.sohu.com/n/ /?qq-f-to=cqq.c2c 445