摘要
采用具有四阶精度的时域有限差分法计算了电离层对时域脉冲的散射，然后应用小波变换求出了反射信号的时频分布。这一时频分布就相当于电离层的频高图。最后利用ＰＯＬＡＮ程序重建了等离子体剖面，重建剖面非常接近原始剖面。
The scattering of timedomain pulse by the ionosphere was calculated using a fourth order (FD)2TD scheme.The reflected pulse was then analyzed using the Morlet wavelet transform to get its timefrequency distribution, with which, the profile was reconstructed using the POLAN program.Good agreement is found between the reconstructed and the original profiles.
出处
《电波科学学报》
EI
CSCD
1999年第2期153-159,共7页
Chinese Journal of Radio Science
关键词
时域散射
逆散射
电离层
数值模拟
Timedomain inverse scattering
Timefrequency analysis
(FD)2TD
Ionosphere
