Frequency-Domain Characterization for Electromagnetic Pulses with Random Timing Jitter
-
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.Abstract: 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 g-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.
-
Key words:
- electromagnetic pulse /
- discrete PSD /
- continuous PSD /
- random timing jitter
-
FORREST J A,CARL E B.Ultra-wideband transmitter research[J].IEEE Trans.Plasma Science,1998,26 (3):860.[2] 孟凡宝,马弘舸,周传明.1 GW超宽带单周期脉冲辐射源实验研究[J].强激光与粒子束,1999,11(4):473-476.MENG Fanbao,MA Hongge,ZHOU Chuanming.Experimental investigation of 1 GW single periodic ultra-wide band pulse radiation source[J].High Power Laser and Particle Bams,1999,11 (4):473-476.[3] 杨丹,方剑,廖成.PML吸收边界条件在孔缝耦合模拟中的应用[J].西南交通大学学报,2005,40(1):108-112.YANG Dan,FANG Jian,LIAO Cheng.Application of PML absorbing boundary condition in numerical simulation of pulses coupling into slot[J].Journal of Southwest Jiaotong University,2005,40 (1):108-112.[4] ROMME J,PIAZZO L.On the power spectral density of time-hopping impulse radio[C]//IEEE Conference on Ultra Wideband System and Technology.Baltimore:IEEE Press,2002:241-244.[5] WIN M Z.A unified spectral analysis of generalized time-hopping spread-spectrum signals in the presence of timing jitter[J].IEEE J.Selected Areas in Commun.2002,20(9):1 664-1 676.[6] 陆大维.随机过程及其应用[M].北京:清华大学出版社,1986:324-337.[7] 管致中,夏恭恪.信号与线性系统[M].北京:高等教育出版社,1992:136-137. -
点击查看大图
计量
- 文章访问数: 1278
- HTML全文浏览量: 45
- PDF下载量: 423
- 被引次数: 0
下载: