THE STUDY OF USING ELECTROMAGNETIC WAVE FOR DETECTING THE SLOPE OF THE SOIL
Date Issued
2005
Date
2005
Author(s)
Wu, Wei-Cheng
DOI
zh-TW
Abstract
This text tries to carry on the detecting and examining of the slope of soil with microwave remote sensing measurement technology, in the original layers of forms medium, all layers and interface between layer is parallel, but in the real stratum, layer with interface than have one little slope extremely on ground surface looks of layer, so use as perturbation method to solve the slope state which accord with realistic topography and stratum , illuminate in the sloping earth's surface, the feasibility going to judge the slope of each layer soil from the signal of reflecting for the electromagnetic wave.
The transmitting behavior in the soil of microwave is influenced by dielectric constant of the soil, the dielectric constant of the soil also determines the speed of signals, decays and energy of the radar, each layer soil is with Maxwell equation preface as the governing equation, and then uses stratified media method and perturbation method to imitate the reflection wave of the electromagnetic wave which shines on the medium of different dielectric constants. The reflection signal is got by an indoor sand box experiment and the analytic solution is deduced from theory and made comparisons finally, to understand the difference between the value that the microwave is surveyed and the theory value in fact, system in order to design a site for using the microwave to survey the slope of soil.
Subjects
麥克斯威爾方程式
無因次分析
微擾法
層狀介質法
Maxwell equation
Normalization analysis
Perturbation methods
Stratified media method
Type
thesis
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