Title :
Retrieval of the effective soil moisture contents as a ground truth from natural soil surfaces
Author_Institution :
Dept. of Electron. & Electr. Eng., Hong Ik Univ., Seoul, South Korea
Abstract :
A method for retrieving effective soil moisture contents from natural soil surfaces is proposed. Natural soil surfaces usually have various types of soil moisture depth profiles. The transmission and reflection coefficients of the homogeneous soil surfaces were examined. The backscatter from a two-layered rough surface was also examined. From those examinations, it can be concluded that only the top 0-1 cm layer of soil surfaces influence the backscatter even for an extremely dry surface, and the effective soil moisture can be obtained from the 1 cm surface layer for L-band, and the top surface layer for C- and X-band frequencies
Keywords :
backscatter; hydrological techniques; moisture measurement; radar cross-sections; remote sensing by radar; soil; terrain mapping; C-band; L-band; SHF; UHF; X-band; backscatter; depth profile; ground truth; hydrology; land surface; measurement technique; natural soil surface; radar remote sensing; radar scattering; reflection coefficient; soil moisture; surface layer; terrain mapping; transmission; two-layered rough surface; vertical profile; Backscatter; Content based retrieval; Frequency; Moisture measurement; Reflection; Rough surfaces; Soil measurements; Soil moisture; Surface roughness; Surface waves;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-6359-0
DOI :
10.1109/IGARSS.2000.857318
