中文摘要：

甚低频通信中最主要的干扰源是雷电引起的大气噪声，但由于大气噪声发生具有随机性和不确定性，进行理论分析比较困难。为了更好的提高甚低频通信系统性能，抑制大气噪声的严重影响，根据大气噪声的幅度分布特性建立了Alpha稳定分布噪声模型，在此基础上搭建了甚低频MSK通信系统。仿真研究了不同参数下Alpha稳定分布大气噪声的组成成分，得到了不同情况下甚低频通信的大气噪声波形和误码性能曲线，验证了大气噪声中脉冲成分对通信系统的严重影响。

英文摘要：

The main interference source in VLF phere noise resulted from thunder and lighting. mosphere noise, the theoretical analysis become （Very Low Frequency） communication system is atmos- However, for the random and uncertain occurrence of at- fairly difficult . To better improve the performance of VLF communication and suppress the serious interference of atmospheric noise, Alpha stable-distribution noise model established in accordance with the statistical characteristics of atmospheric noise, and VLF MSK communication system is constructed based on this. Simulation on the components of Alpha stable-distri- bution atmospheric noise under different parameters is done, from which the atmosphere noise waveform and error performance of VLF communication in variable situation are acquired, and through which the serious influence of impulse component in atmosphere noise on VLF communication system also verified.