基于1553B和SpaceWire组合网络的星载数据管理软件设计

Onboard OBDH software design based on combined network of 1553B and SpaceWire

摘要:

为同时满足对于星务管理数据和高速载荷数据的传输要求,国内外的飞行器趋于使用1553B和SpaceWire组合网络来进行星上数据传输。复杂而灵活的数据传输要求使得卫星数据流设计中引入了大量标准协议,同时大大增加了星载数据管理软件的复杂度。对一种基于1553B和SpaceWire组合网络的星载数据管理软件的协议体系进行了介绍,通过对协议进行分析,改进了已有的软件框架,形成了一种基于标准协议的分层的软件架构,以空间包为单位实现星内数据交互,实现了软件应用层与数据链路协议的分离。软件实现结果表明,合理的协议分层和有效的接口封装提高了软件的可拓展性和可移植性,有利于软件产品化。

Abstract:

Spacecraft tends to use combined network of 1553B and SpaceWire to meet the transfer need of both platform management data and payload data. Lots of standard protocols are applied to provide variable and flexible data service, which makes onboard software much more complicated. A protocol set of onboard OBDH software applying combined network of 1553B and SpaceWire is introduced in this article. Based on analysis on the protocols, the software frame as well as the route-table on board is improved. It is proved that the software is much easier to transform and maintain by applying reasonable layer and encapsulation, which can do good to software production as well.