双极化位相法测量半空间介质介电常数
DUAL POLARIZATION AND PHASE METHOD TO DETECT PERMITTIVITIES IN HALF SPACE
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摘要: 在实验中试用了一种空间波测量无限大半空间介质复介电常数的方法:用一个喇叭同时发射垂直极化波和平行极化波,另一个喇叭交替接收两个极化波的前向散射的振幅和相位。实验在X波段进行,目标介电常数可在任意范围,结果与金属板定标法符合较好。该方法在微波遥感中将有较大实用价值。Abstract: A method using space waves to detect the permittivites of media in half space is performed in the laboratory: transmitting a wave with both parallel and perpendicular polarizations simultanlously by a born and receiving the amplitudes and phases of the specular reflected waves with each polarizations respectively. The experiment is performed in X frequency band. The permittivites of target can be in any range. The results agree with that by the metal-scalling method. This method is of value in practical use.
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