随机抖动电磁脉冲串的频域特性  

Frequency-Domain Characterization for Electromagnetic Pulses with Random Timing Jitter

作　　者：许建军[1] 廖成[1] 肖开奇[2] 

机构地区：[1]西南交通大学电磁场与微波技术研究所,四川成都610031 [2]西南电子设备研究所,四川成都610036

出　　处：《西南交通大学学报》2007年第2期190-193,共4页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(60441006)

摘　　要：针对工程实践中电磁脉冲发射机辐射的随机时间抖动周期性电磁脉冲信号,在分析随机时间抖动周期δ-函数功率潜密度的基础上,得出了随机时间抖动周期性电磁脉冲串的功率谱密度．结果表明,这类电磁脉冲串的功率谱密度由离散谱分量和连续谱分量组成,它们组成的总功率守恒．数值计算结果表明,随时间抖动范围增大和频率提高,离散功率谱分量所占比例下降．To study the periodical electromagnetic pulses with random timing jitter radiated by electromagnetic pulse transmitters, the PSD （power spectral density） of periodical electromagnetic pulses with random timing jitter was obtained based on the analysis of the δ-function of the PSD of timing jitter. The result shows that the PSD of the electromagnetic pulses consists of a continuous component and a discrete component, with the total power of the two parts being conservative. The numerical results demonstrate that the larger the zone of timing jitter and the higher the frequency, the less proportion the discrete PSD component is in the total PSD.

关 键 词：电磁脉冲 离散功率谱密度 连续功率谱密度 随机抖动 

分 类 号：TN925[电子电信—通信与信息系统]