| 摘要: |
| 近年来，各国针对近地小行星的威胁及相应防御策略的研究越来越多。调研了国内外近地天体观测发展现状和多种近地小行星撞击地球的防御策略，通过比较分析防御策略的实现原理、关键技术和存在的问题，对各种策略的适用性、可行性和有效性进行了评估。通过对各种策略的分析和总结，结合我国近地小行星防御策略的研究现状，尝试性提出了采用多种策略组合的方式对有潜在威胁的小行星采取相关有效方案，为航天器的研制和防御策略的实施争取更多的时间。 |
| 关键词: 小行星 防御策略 动力冲击 太阳能集热 低推力推进 |
| DOI：10.15982/j.issn.2095-7777.2017.06.009 |
| 分类号: |
| 基金项目: |
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| Analysis of Defense Strategies of Near-Earth Asteroids |
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LIU Xueqi1,2,3, SUN Haibin1, SUN Shengli1
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1.Shanghai Institute of Technical Physics of the Chinese Academy of Sciences, Shanghai 200083, China;2.University of Chinese Academy of Sciences, Beijing 100049, China;3.ShanghaiTech University, Shanghai 201210, China
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| Abstract: |
| The development of observing near-Earth objects and the defense strategies of a variety of near-Earth asteroids are investigated. By comparing and analyzing the realization principle, key technology and existing problems of the defense strategies, the applicability, feasibility and effectiveness of the various strategies are evaluated. Furthermore, with the analysis and summary of these strategies, combining with the research status of near-Earth asteroid defense strategies in China, an effective strategy is put forward, which combines a variety of strategies to take the relevant effective tactics coping with the potential threat of the asteroids. For example, the kinetic impactor, the Solar collector, the mass driver, or the low thrust propeller are used on one side of the asteroid, and the gravity tractor is used on the other side, that can more effectively deflect the asteroid toward one direction, and gain time for the development of spacecraft and the implementation of defense strategies. |
| Key words: asteroid defense strategies kinetic impact Solar collector low thrust propulsion |
