摘要
在假设媒质参数与频率有关的情况下,对探地雷达用于地下分层媒质探测时的理论分析计算模型进行了较为详细地讨论,计算给出了地面上方空气中的反射脉冲波形。对雷达脉冲在分层有耗媒质中的反射和传播特性进行了研究。同时,通过将本文的结果与文献用另一种方法计算的结果进行比较,证实了这里提出的分析计算方法的正确性。最后,还给出了雷达用于冰层等探测时的计算波形。
The calculation model of subsurface interface radar for underground multilayered lossy media surveying is discussed in detail.The reflected pulses at the receiving antenna in air are given.The reflection and transmission characteristics of radar pulses in lossy media are studied with the media having frequency—dependent conductivity and complex permittivity.Calculated results by this method has been compared with those by Sivaprasad.Good agreement has been obtained.It can be concluded from the analysis that the attenuation of lossy media to the frequency components of radar pulses is unidentical.The high frequency components are attenuated most rapidly with depth. And,finally,various models,e.g.ice layer are also discussed.
出处
《电波科学学报》
EI
CSCD
1993年第3期40-45,80,共7页
Chinese Journal of Radio Science
关键词
有耗媒质
传播
特性
反射
探地震达
Subsurface fadar pulses
Multilayered lossy media
Pulses reflection and transmission
