航天器弱电磁信号处理设备综合防护技术  

Techniques for comprehensive protection of spacecraft equipment for processing weak electromagnetic signals

作　　者：邓凯文[1] DENG Kaiwen(Institute of Manned Spacecraft System Engineering,China Academy of Space Technology,Beijing 100094,China)

机构地区：[1]中国空间技术研究院载人航天总体部,北京100094

出　　处：《航天器环境工程》2020年第4期402-407,共6页Spacecraft Environment Engineering

摘　　要：航天器弱电磁信号处理设备极易受到来自数据管理、姿态控制、供配电等电子设备的噪声干扰而无法正常工作。文章分析了弱电磁信号处理设备受航天器平台干扰的机理和干扰源识别方法,提出低频电缆整束屏蔽、穿舱电缆孔缝屏蔽、舱外设备支架屏蔽和舱体结构电磁隔离等多种抗干扰防护措施。实践证明这些措施可有效实现弱电磁信号处理设备的抗干扰防护,具有工程应用价值,可供航天器总体电磁兼容性设计参考。The spacecraft payload equipment for processing weak electromagnetic signals is vulnerable to the noise emitted by the electronic equipment of the platform,and such equipment includes the data management unit,the attitude control unit,and the power distribution block.In this paper,the related mechanism of interference is identified,and several anti-interference protection techniques are discussed,such as the overall shielding for the low frequency cables,the slot shielding for cables routing through panels,the shielding for the bracket outside the satellite,and the physical metal isolation for the external structure.These techniques have their engineering values,and can be used by spacecraft system engineers in the EMC design.

关 键 词：航天器 电磁兼容性 弱电磁信号 穿舱电缆 电磁屏蔽 

分 类 号：TM15[电气工程—电工理论与新技术]