雙極化位相法測量半空間介質(zhì)介電常數(shù)
DUAL POLARIZATION AND PHASE METHOD TO DETECT PERMITTIVITIES IN HALF SPACE
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摘要: 在實(shí)驗(yàn)中試用了一種空間波測量無限大半空間介質(zhì)復(fù)介電常數(shù)的方法:用一個(gè)喇叭同時(shí)發(fā)射垂直極化波和平行極化波,另一個(gè)喇叭交替接收兩個(gè)極化波的前向散射的振幅和相位。實(shí)驗(yàn)在X波段進(jìn)行,目標(biāo)介電常數(shù)可在任意范圍,結(jié)果與金屬板定標(biāo)法符合較好。該方法在微波遙感中將有較大實(shí)用價(jià)值。
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關(guān)鍵詞:
- 雙極化; 位相法; 半空間介質(zhì); 介電常數(shù); X波段; 鏡向反射
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. -
黃楊,揚(yáng)習(xí)榮,耿淮濱. 土壤含水量及其徽波反射特性關(guān)系的研究. 環(huán)境遙感, 1986, 1(2): 101-106.[2]張俊榮. 微波遙感典型地物介電常數(shù)實(shí)地側(cè)量. 定最化遙感技術(shù), 國家高技術(shù)信息獲取與處理技術(shù)專家組,1995.[3]陳志雨, 李安萊, 周東青. 空間波法與長試樣法測量介電常數(shù)的結(jié)果與對(duì)照. 遙感學(xué)報(bào),1997,1(1): 40-45.[4]Ruck, et al. Radar Cross Section Handbook. New York: Plenum, 1997. -
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