微波遥感典型地物介电常数实地测量
IN SITU MEASUREMENT OF TYPICAL OBJECTS PERMITTIVITIES IN MICROWAVE REMOTE SENSING
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摘要: 在微波遥感定量化研究中,要求对遥感目标的介电特性有较准确的了解.为此采用自由空间法在野外实地测量典型目标的介电常数.给出了基本原理,定标方法及在X波段对黑土,草地,和冰所测的介电常数。分析比较了测量结果。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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