Abstract
This paper describes an on-board computer system for small satellite using commercial devices. By the recent growth of mobile communication and ubiquitous network, modern commercial devices have high performance in spite of the small size and low power consumption. On the other side they do not have the tolerance for space radiation because of the high-density process and low supply voltage. In this study, we are proposing an operating system (OS) which have not only fundamental functions of OS but EDAC (Error Detection and Correction) functions for errors of SEU (Single Event Upsets) in the kernel level. As for SEL (Single Event Latchup), this system detects the short-current and shutdown the main power supply by using software and hardware cooperatively. In this paper we are showing the architecture of this proposing on-board computer system.
