全向辐照电磁环境构建及与BPSK系统的干扰效应研究

目的分析某型通信电台在工作时所处的复杂电磁环境,构建基于混响室原理的全向辐照电磁环境。方法以一个采用标准BPSK信号的数字通信系统为例,研究干扰信号码速、频率偏移量、信干比等参数对系统误码率的影响。结果当干扰信号码速低于期望信号码速时,随着频率偏移量的增加,接收系统误码率也随之减小,且呈现周期性规律;当信干比相同时,在相同的频率偏移下,干扰信号的码速越高,其干扰效果越好;当干扰信号码速高于期望信号码速时,随着干扰信号码速的进一步增大,干扰效果将呈现逐渐降低的趋势。结论该研究在电子装备的复杂电磁环境适应性方面做出了有益探索,为今后的复杂电磁环境适应性理论的深入研究提供了借鉴。

Structure of Full Radiation Electromagnetic Environment and Interference Mechanism of BPSK System

Objective To analyze the complex electromagnetic environment of a communication station and build a full radiation electromagnetic environment based on the principle of live room. Methods A standard BPSK communication system was taken as an example to research the code rate of interference signal, frequency offset, and signal to interference ratio (SIR) on bite error rate (BER) of the system. Results The BER decreased with the increase of frequency offset and presented a periodicity rule, if the code rate of inference signal was lower than expectation. When the frequency offset was the same, the higher the code rate was, the better the interference effect was. If the code rate of interference signal was higher than the expectation, the interference affect decreased with the increase of the interference signal. Conclusion The study is a beneficial exploration on complex electromagnetic environment suitability of electronic equipment. It provides a foundation for in-depth research of complex electromagnetic environment suitability in the future..