MULTIFREQUENCY PASSIVE MICROWAVE REMOTE-SENSING OF SOIL-MOISTURE AND ROUGHNESS

被引：61
|
作者：
PALOSCIA, S [1 ]
PAMPALONI, P [1 ]
CHIARANTINI, L [1 ]
COPPO, P [1 ]
GAGLIANI, S [1 ]
LUZI, G [1 ]
机构：
[1] FDN SCI AMBIENTE,I-50125 FLORENCE,ITALY
来源：
INTERNATIONAL JOURNAL OF REMOTE SENSING | 1993年 / 14卷 / 03期
关键词：
D O I：
10.1080/01431169308904351
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
The accuracy achievable in the surface soil moisture measurement of rough bare and vegetated soils, typical of the Italian landscape, has been investigated by using microwave experimental data collected by means of a multiband sensor package (L, X, K(a) and infrared bands). The thickness of soil that mainly affects the emission at the three microwave frequencies has been assessed. The sensitivity of L band emission to the moisture content of a soil layer about 5 cm thick has been confirmed, as well as the attenuation effect due to the surface roughness and presence of vegetation. A correction criterion based on the sensitivity to roughness and crop parameters of the highest frequencies (X and K(a) bands) is proposed in order to increase the precision in soil moisture measurements.
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页码：467 / 483
页数：17
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