SpaceWire总线EMC设计分析

Analysis of EMC design for SpaceWire

SpaceWire总线是由欧空局提出的一种面向航天应用的通信技术。在航天领域,电磁兼容性是航天器研制所应达到的重要性能指标。鉴于航天应用中面临的严苛的工作环境以及狭小的工作空间,各仪器设备具有良好的EMC性能,是航天器安全性、可靠性的重要保障。首先简要介绍了SpaceWire总线特点;然后对其EMC设计的各个方面进行了详细分析,并列出了EMC性能测试相关结果,结果表明按照本文要求设计的SpaceWire总线设备其电磁兼容性符合指标要求;最后在SpaceWire总线电缆改进方面提供了相关建议。

In the field of aerospace,electromagnetic compatibility （EMC） is the key performance indicator for assessing the development of spacecraft.SpaceWire bus,as a high-speed on-board bus with good EMC performance,is the important guarantee for spacecraft safety and reliability.This article briefly describes fundamental characteristics of the SpaceWire bus,and achieves a detailed analysis of its EMC,and then lists its relevant EMC performance test results,which shows that the design will be in accordance with the implied requirements.The results turns out,of course,SpaceWire bus devices are able to meet the electromagnetic compatibility targets.Finally,the article will provide recommendations for how to improve SpaceWire bus cable performance.