论文部分内容阅读
随着卫星电子系统的小型化和智能化,新型智能高速总线SpaceWire日益受到关注.利用基于面向对象的离散事件建模与仿真分析工具—SMAT对基于SpaceWire实现的卫星数管系统设计原型方案进行了建模,模型考虑了具有数据速率变化范围大、具有多业务结构的CCSDS国际标准约定的空间数据系统特点,针对SpaceWire数据传输速率大、网络路由机制和冗余的链路传输等特点进行了仿真.最后设定了一种实验方案,对关心的传输效率、数据延迟、容错能力、负载能力等性能进行了仿真,从而考虑系统设计方案的可行性,系统性能的评价结果可为系统设计人员早期验证及方案改进提供定量依据.
With the miniaturization and intelligence of satellite electronic systems, SpaceWire is attracting more and more attentions on the new smart high-speed bus.With the object-oriented discrete event modeling and simulation analysis tool -SMAT, the prototype design of satellite digital tube system based on SpaceWire Modeling, the model takes into account the characteristics of the spatial data system agreed upon by the CCSDS international standard with large data rate variation range and multi-service structure, and simulates the characteristics of SpaceWire data transmission rate, network routing mechanism and redundant link transmission Finally, an experimental scheme is set up to simulate the performance such as transmission efficiency, data delay, fault tolerance and load capability, so as to consider the feasibility of the system design. The evaluation results of the system performance can be used by system designers in the early stage Verification and program improvement to provide a quantitative basis.