Overview of Sun-Earth L1 Point Near-Earth Asteroid Monitoring Microsatellite Missions
The field of view for near Earth asteroids observed by ground-based astronomical telescopes is limited due to backlighting,while observing form a Venus-like orbit or at the Sun-Earth L1 point can provide better visible ranges.In this paper,a proposal is made to use microsatellites positioned at the Sun-Earth L1 point for monitoring near-Earth asteroids.The overall design of the mission microsatellites is described,the transfer orbit design is analyzed in detail,and a payload design scheme is provided.Through missions,several key technologies for deep space microsatellites are verified,including the overall design with large velocity increments using electric propulsion,the low-energy transfer orbit design for deep space,and the high-performance on-orbit processing of astronomical data,thereby exploring a cost-effective approach to deep space exploration.
deep space explorationplanetary defensesatellite overall designmicrosatelliteon-orbit data processingSun-Earth L1 point
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