Protection design of ship short-wave communication system in HEMP environment

Abstract

Aiming at the problem of ship shortwave communication link degradation or damage caused by HEMP E1 pulse, this paper analyzes the coupling path and electromagnetic environment of the shortwave communication system under HEMP stress, establishes a vulnerable link coupling model, and simulates the interface coupling equivalent. Combined with the protection level of vulnerable modules, the vulnerable link protection module is designed. Finally, the performance of the protection module was simulated and tested. The test results show that the designed protection module can reach 35dB for EMP signal protection without affecting normal communication signals, which meets the short-wave vulnerable link invulnerability under HEMP environment.