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Innovations in the AOCS of AstroSat spacecraft
Journal of Astrophysics and Astronomy ( IF 1.1 ) Pub Date : 2021-06-29 , DOI: 10.1007/s12036-021-09730-6
Jasvinder Singh Khoral , R. Aditya , Harish Joglekar , Prashant Kulshreshtha , Manoj Kumar , Deepa Pramod , A. M. Nagalakshmi

AstroSat is India’s first mission dedicated to space-based Astronomy and carries a complement of instruments sensitive over a wide spectral region covering visible, ultraviolet, soft X-ray and hard X-ray bands. The spacecraft platform provides the required stability, pointing, power, thermal control, and interface requirements. Among the critical functions of the Attitude and Orbit Control System (AOCS) were, manoeuvre the spacecraft from one target source to another in an optimal way while avoiding the sun, compensate for the rotational disturbance torque created by the scanning of the SSM payload on the other payloads, primarily the UVIT payload, provide for calibration of all the payloads, which involved manoeuvring through 2-dimensional target patterns. All the above novel control functions, along with the routine house-keeping operations, were designed, developed, and tested extensively on ground, before declaring them as flight-worthy. The payload performance and the resulting science are a testimony to the excellent performance of the on-board Control System.



中文翻译:

AstroSat 航天器 AOCS 的创新

AstroSat 是印度第一个致力于天基天文学的任务,它携带着一套对广泛光谱区域敏感的仪器,涵盖可见光、紫外线、软 X 射线和硬 X 射线波段。航天器平台提供所需的稳定性、指向、功率、热控制和接口要求。姿态和轨道控制系统 (AOCS) 的关键功能包括,在避开太阳的同时以最佳方式将航天器从一个目标源操纵到另一个目标源,补偿由扫描 SSM 有效载荷上的 SSM 有效载荷产生的旋转扰动扭矩。其他有效载荷,主要是 UVIT 有效载荷,用于校准所有有效载荷,包括通过二维目标模式进行机动。所有上述新颖的控制功能,以及日常的内务管理,在宣布它们具有飞行价值之前,它们在地面上进行了广泛的设计、开发和测试。有效载荷性能和由此产生的科学证明了机载控制系统的卓越性能。

更新日期:2021-06-29
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