Temporal Skewness of Electromagnetic Pulsed Waves Propagating Through Random Media with Embedded Irregularity Slab
XU Zheng-Wen1,2, WU Jian2, HUO Wen-Ping2, WU Zhen-Se1
1School of Science, Xidian University, Xi’an 710071
2National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Beijing 102206
Temporal Skewness of Electromagnetic Pulsed Waves Propagating Through Random Media with Embedded Irregularity Slab
1School of Science, Xidian University, Xi’an 710071
2National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Beijing 102206
Abstract： Electromagnetic pulsed waves can be distorted in the propagation through random media, and their energy distributions change along the leading and trailing edge of the waveform, which can be presented by the temporal skewness. The skewness presents asymmetry and is treated by the third order temporal moment, in which an analytic solution for the two-frequency mutual coherence function is obtained recently. Then, transionospheric pulses are discussed in details. Both theoretical analysis and numerical computation indicate that the contributions from scattering and dispersion of irregularities dominate over those of background, so the latter can be neglected in most cases. Also, the temporal skewness of a transionospheric pulse is negative and energy is shifted to the leading edge.
XU Zheng-Wen;WU Jian;HUO Wen-Ping; WU Zhen-Se. Temporal Skewness of Electromagnetic Pulsed Waves Propagating Through Random Media with Embedded Irregularity Slab[J]. 中国物理快报, 2003, 20(3): 370-373.
XU Zheng-Wen, WU Jian, HUO Wen-Ping, WU Zhen-Se. Temporal Skewness of Electromagnetic Pulsed Waves Propagating Through Random Media with Embedded Irregularity Slab. Chin. Phys. Lett., 2003, 20(3): 370-373.
2003, Vol. 20 
