The thesis introduces the on-board computer (OBC) software of Chuangxin-1 micro-satellite which developed by
shanghai micro-satellite engineering department of Chinese Academy of Science, and illustrates the reliable design for
on-board data handling (OBDH) software. The OBDH software adopted some new techniques to improve the reliability.
The micro-satellite employed dual-computer, and the standby OBC will take over the management of micro-satellite as
soon as the host is failure. The OBC is the core of micro-satellite, and all sub-system of satellite and payload are
managed by OBC. To ensure the reliability of OBC, there are some special methods for OBDH software. For standby
OBC can take over control of micro-satellite smoothly and resume normal running when the host is failure, some
important on-orbit running information of satellite is transferred to standby OBC. These measurements assured the
micro-satellite can be resumed to normal running.
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