引言 机动的SAM-D防空导弹系统要求具有抗核电磁脉冲的能力。当系统设计展开以后,发现原来考虑到系统在电磁脉冲环境中生存而确定的单点接地方案与为取得满足电磁兼容性的技术要求而采用的接地、屏蔽、滤波等设计的实际情况有矛盾。由于这种矛盾而产生了分区集体接地(zonal mass Introduction The mobile SAM-D air defense missile system requires the ability to resist nuclear electromagnetic pulses. When the system design was expanded, it was found that the single-point grounding scheme that originally considered the system surviving in the electromagnetic pulse environment was contradicted with the actual design of the grounding, shielding and filtering used to meet the technical requirements of electromagnetic compatibility. As a result of this conflict, zonal mass grounding has occurred