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3 m급 광학영상 촬영을 위한 6U 초소형위성 시스템 개념설계
김극남,박상영,김기환,박승한,송영범,송성찬,Kim, Geuk-Nam,Park, Sang-Young,Kim, Gi-hwan,Park, Seung-Han,Song, Youngbum,Song, Sung Chan 항공우주시스템공학회 2022 항공우주시스템공학회지 Vol.16 No.3
The purpose of this study was to present a conceptual design of the 6U micro-satellite system for optical image of 3 m GSD. An optical camera system with a payload of 3 m GSD image was designed and optimized. The optical system has a diameter of Ø78 mm, length 250 mm, and 1400 mm focal length. The requirement and constraints were configured for the 6U micro-satellite bus system with the payload. Satisfying the requirement and constraints, the subsystems of the 6U bus were designed such as attitude and orbit control, propulsion, command and data handling, electrical power, communication, structures and mechanisms, and thermal control subsystem. The mass budget, power budget, and communication link budget were also confirmed for the 6U micro-satellite comprising the optical payload and the subsystems of bus. To take optical images, a mission operation concept is proposed for the 6U micro-satellite in a low-Earth orbit. A constellation comprising many 6U micro-satellites studied in this paper, can provide with various data for reconnaissance and disaster tracking.