航天器屏蔽电缆电磁辐射的分析与测试

为了减小屏蔽电缆对航天器的影响，提出了基于传输阻抗和屏蔽层共模信号的电磁辐射分析方法.采用Kley模型分析内导体与屏蔽层之间的传输阻抗，将共模信号进行电流元分解；采用赫兹偶极子等效模型分析电缆的电场辐射.用辐射法测试屏蔽电缆的电磁辐射，以实现在常规电磁兼容性实验室开展测试的目标.仿真分析和实验结果证明，该方法可对屏蔽电缆的电磁辐射进行有效地分析和测试，可应用于航天器电缆的电磁兼容性分析和测试.

Electromagnetic Radiation Analysis and Test for Spacecraft Shielded Cable

To reduce the influence of the shielded cable on spacecrafts, a electromagnetic radiation analysis method based on the transfer impedance and common mode signal of shielding layer is proposed. In particular, Kley model is used to analyze the transmission impedance between the inner conductor and the shielding layer. Then, the common mode signal is decomposed by the current element, and the electric field radiation of the cable is analyzed by the Hertz dipole equivalent model. The radiation test method is proposed to test the electromagnetic radiation of the shielded cable to perform in a conventional electromagnetic compatibility laboratory. Both simulations and experiments show that the methods can effectively analyze and test the electromagnetic radiation of shielded cables. These methods can provide electromagnetic compatibility analysis and test guidance for spacecraft cable applications, which has a high application value in practice.