摘要
复杂的战场电磁环境严重影响了机载光电平台的安全性、可靠性和技术指标。为了提高小型机载光电平台的战场工作效能,从屏蔽的角度出发,对其进行了电磁兼容性设计。首先阐述了电磁屏蔽的屏蔽效能,并分别从屏蔽材料的选择、ABS外壳屏蔽、缝隙处屏蔽及敏感单元双层屏蔽等方面对小型机载光电平台进行了电磁屏蔽设计。通过电磁兼容性试验对屏蔽效果进行了验证。试验结果表明,采取合理的屏蔽措施后,小型机载光电平台的视频图像显示正常;传导发射值降低了约20 d BμV;电场辐射发射值降低了约10 d BμV/m;并且其余各项试验均得到了不同程度的改善。为机载光电平台电磁兼容性设计提供了参考。
Complicated battlefield electromagnetic environment seriously affects the safety, reliability and technical index of airborne electro-optical platform. Electromagnetic shielding of minitype airborne electrooptical platform was designed in order to improve its battle efficiency. Firstly, the shielding effectiveness of electromagnetic shielding was expounded. Design of electromagnetic shielding was carried out for minitype airborne electro-optical platform from the aspects of circuit board, ABS shell, gaps and video transmission. The shielding effects were verified by electromagnetic compatibility test. The test results show that the video image is normal, conduction emission value is reduced by about 20 dBμV/m, radiation emission value was reduced by about 10 dBμV/m, and other items test are improved to varying degrees, which provide a reference for the design of electromagnetic compatibility for minitype airborne electrooptical platform.
出处
《红外与激光工程》
EI
CSCD
北大核心
2016年第9期229-234,共6页
Infrared and Laser Engineering
基金
中国科学院长春光学精密机械与物理研究所重大创新工程项目(Y3CX1SS14C)
关键词
电磁屏蔽
机载光电平台
传导辐射
电磁干扰
electromagnetic shielding
airborne electro-optical platform
conduction radiation
electromagnetic interference
