Satellite-borne computer system and data receiving and sending method thereof

A spaceborne computer system comprises a spaceborne microprocessor used for data processing and whole-satellite control; the data memory is used for storing load data; and the coprocessor is electrically connected with the satellite-borne microprocessor and the data memory, and the coprocessor is provided with a plurality of data receiving and transmitting channels and is used for automatically storing and forwarding the load data. The communication coprocessor is integrated in the universal processor module, the interface data management and control function of the on-satellite universal processor is completed by the coprocessor, the working efficiency of the on-satellite universal processor is improved, and meanwhile on-satellite platform computing resources are saved. 一种星载计算机系统，包括：星载微处理器，用于进行数据处理和整星控制；数据存储器，用于存储载荷数据；协处理器，与所述星载微处理器和所述数据存储器电连接，所述协处理器具有复数个数据收发通道并对所述载荷数据进行自动存储及转发。在通用处理器模块中集成了该通信协处理器，将星上通用处理器的接口数据管控功能交由协处理器完成，提升星上通用处理器的工作效率，同时节省星上平台计算资源。