The Research On Data Flow Management And Implementation Of Inter-Satellite Link On1553B Bus

Abstract:As a way of system realization and performance improvement for Navigation satellite, Inter-Satellite link is also the strategic needs to ensure the availability of navigation system in wartime. To realize the system function of inter-satellite link, we need an effective and stable data stream management system to manage the data transmission and exchange of information between space-borne devices. Data bus as a hub of data transmission between space-borne equipment is the key to the system function realization. As a data transmission protocol which is proposed by the US military,1553B bus has high communication rate, high stability and good real-time performance, widely used in aviation electronics fields, is suitable to be the data transmission bus of system. Therefore, Researching on the data stream management system based on1553B bus is of great strategic significance to the implementation of link function of inter-satellite link.This paper mainly studied the design and implementation of data stream management system based on1553B bus. Firstly, we introduced the overall structure of data stream management system based on space-borne1553B bus and the function, message structure, data transmission protocol of1553B bus. Secondly, we designed the message structure of system in detail. To realize the function of system, we adopt the embedded development board with BU-61585as the hardware platform of space-borne data management system, as well as VxWorks embedded operating system as the software platform. Then we introduced in detail the overall process configuration of remote terminal communication module, bus control communication module, local processing as well as implementation of time synchronization module and did software design of each module. After that, we used simulation board of1553B bus to verify the function of send and receive function of each address. Lastly, we used the docking test load ground system, satellite-borne computer simulator to test the system. The results shows that, under normal working state, the load data stream management system we designed can realize the management of load bus data flow, satisfy the functional requirement of the system, In addition to that, it has high reliability, has reached the expected goal.32Figures,28tables,61references.