Soil moisture retrieval using the Danish L- & C-band polarimetric SAR

Jiankang Ji, Peter van der Keur, Anton Thomsen, Henning Skriver

Publikation: KonferencebidragArtikel ved konferencepeer review

17 Citationer (Scopus)

Abstrakt

Danish polarimetric SAR data have been applied to estimate soil moisture (SM). The preliminary results evaluated with the L- and C-band SAR data acquired at the Danish test site Foulum during a number of missions in 1994 and 1995 are presented. In situ data have been collected during the SAR missions and the variations of SM at field scale are discussed. The Integral Equation Method (IEM), the Dubois empirical model and the Oh polarized-ratio model have been used as algorithms to inverse SM from polarimetric SAR data under near bare field conditions. Comparisons between the inversions and the in situ measured data showed that the Dubois empirical model gave the best results for inversion of SM. The standard deviations between the inversed and the measured data at C-band are sm(v) = 6.1% for SM and sσ = 0.37 cm for soil surface rms height, respectively. C-band data are better than L-band data for estimation of surface roughness.

OriginalsprogEngelsk
Sider1300-1302
Antal sider3
StatusUdgivet - 1996
BegivenhedProceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4) - Lincoln, NE, USA
Varighed: 28 maj 199631 maj 1996

Konference

KonferenceProceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4)
ByLincoln, NE, USA
Periode28/05/9631/05/96

Programområde

  • Programområde 2: Vandressourcer

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