一种基于单机EMC试验结果的航天器系统级电磁兼容性分析方法

为提前识别单机电磁兼容性（EMC）试验超标情况对于航天器系统级电磁兼容性的影响，提出一种基于单机试验结果的航天器系统级电磁兼容性分析方法，即在单机EMC试验结果基础上，考虑安装位置影响，与系统级传导、辐射的敏感度限值和接收机灵敏度进行比较，获得安全裕量。对直立姿态两舱结构航天器的典型设备（包含非射频类产品、射频类产品和供配电产品）进行仿真计算，分析单机EMC试验超标结果对于整个航天器以及运载火箭电磁兼容性的影响。与实际测试数据的比较结果表明，所提出的分析方法能够实现利用单机EMC试验结果对航天器系统级电磁兼容性进行有效预测。

Method for analyzing spacecraft electromagnetic compatibility based on EMC test results for individual equipment

To estimate the influence of a single out-of-limit electrical equipment on the spacecraft electromagnetic compatibility at the system level, a simulation method is proposed for analyzing the spacecraft electromagnetic compatibility based on the EMC test results for the unit equipment, that is, to compare the simulated EMC test results for an equipment with the systematic susceptibility limits of the radiation, the transmission and the receiver sensitivity, with consideration of the installation position to obtain the safety margin. The simulation of a typical equipment (including non-RF products, RF products and power supply & distribution products) of an upright attitude two-compartment spacecraft model is carried out, and the influence of the exceeding EMC test results on the electromagnetic compatibility of the whole spacecraft and the rocket is analyzed. Comparison with the real test results shows that the above method can be used for effectively predicting the spacecraft’s electromagnetic compatibility at system level.