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基于异构星座的近地天体宽视场普查与定位系统
霍卓玺
0
摘要:
近地天体在行星科学、地球行星防御、深空探测和行星资源开发与利用方面具有重要研究价值。近地天体的普查和定位是进一步详查、探测、研究的前提。当前主要依赖的地面光学系统能力受限,在巡天效率和覆盖率方面存在劣势。天基系统是未来发展方向。我们提出一种基于微小卫星低成本方案的异构星座,搭载宽/窄视场、高/低分辨率光学载荷,有望为近地天体普查与定位提供一种低成本、高效率的解决方案。
关键词:  近地天体,行星防御,微小卫星
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Constellation of heterogeneous wide field near-Earth object surveyors
huozhuoxi
Abstract:
A constellation of heterogenous wide field near-Earth object surveyors (CROWN) is proposed in this paper. Near-Earth Objects (NEOs) survey is interesting in planetary science and is vital for planet defence. It helps characterize the small objects population of the solar system. It's believed small objects such as asteroids, comets and meteorites are leftovers of the planet formation process. Habitable condition and geological history of the Earth might have been shaped by incoming NEOs during the bombardment era. NEOs survey is necessary to identify potentially hazardous objects (PHOs), which is a prerequisite for NEO alert and response. Space-based NEO surveyor is more efficient and more economic than ground-based large telescopes. The proposed constellation consists of one satellite (mother surveyor) with a high-resolution telescope on-board and several miniatured satellites (daughter surveyors) with wide field cameras on-board. This constellation also makes a panoramic observatory which is competitive in astronomical transients monitoring, such as super novae, microlensing, etc.
Key words:  Near-Earth object, Planetary defense, Micro-satellite