微波遙感典型地物介電常數(shù)實(shí)地測量
IN SITU MEASUREMENT OF TYPICAL OBJECTS PERMITTIVITIES IN MICROWAVE REMOTE SENSING
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摘要: 在微波遙感定量化研究中,要求對(duì)遙感目標(biāo)的介電特性有較準(zhǔn)確的了解.為此采用自由空間法在野外實(shí)地測量典型目標(biāo)的介電常數(shù).給出了基本原理,定標(biāo)方法及在X波段對(duì)黑土,草地,和冰所測的介電常數(shù)。分析比較了測量結(jié)果。
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關(guān)鍵詞:
- 微波遙感; 介電常數(shù); 自由空間法; 實(shí)地測量
Abstract: In microwave remote sensing quantitative study, it needs to know dielectric properties of remote sensing objects precisely. The free-space method was used to in situ measure typical objects permittivities in the fields for obtaining precise data of fitting for remote sensing real objects. The basis and calibration method of free-space method were given. The permittvities of black soil, meadow, and ice with the method were presented. The results were analysed. -
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