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Abstract
Publisher Summary This chapter discusses the fault tolerant onboard implementation of control procedures in tethered satellite. The integration of data handling (DH) and AMCS Subsystems may be realized in different ways and three basic solutions have been considered for implementation in a tethered satellite and a summary of the tradeoff results is presented. In the most usual configuration, the on board data handling (OBDH) tasks are supplied by a central terminal unit (CTU) linked to remote terminal units (RTU) through the OBDH Bus. Two independent boxes, attitude monitoring electronics, and attitude control electronics support the AMCS control functions, and are linked to the OBDH through one of its RTUs. In the second configuration, the AMCS functions are performed by a processor based unit connected to the OBDH Bus. The sensors data, read by the OBDH Intelligent Terminal Unit, are processed by the AMCS dedicated ITU which may send also commands for the actuators devices. The further step is that of putting together DH, and AMCS control elements in the CTU.
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