Title :
Profile soil moisture estimation using the modified IEM
Author :
Walker, Jeffrey P. ; Troch, Peter A. ; Mancini, Marco ; Willgoose, Garry R. ; Kalma, Jetse D.
Author_Institution :
Dept. of Civil, Surveying & Environ. Eng., Newcastle Univ., Callaghan, NSW, Australia
Abstract :
A variable transition rate factor is proposed for the modified IEM, such that it uses a variable dielectric profile down to the radar observation depth. A theoretical observation depth model is also proposed. It is shown that radar observation depth calculated by this model agrees with values noted in literature, and that backscattering simulations using the variable transition rate factor compare well with data collected in the European Microwave Signature Laboratory (EMSL) experiments
Keywords :
backscatter; geophysical techniques; hydrological techniques; moisture measurement; radar cross-sections; radar theory; remote sensing by radar; soil; terrestrial electricity; backscatter; backscattering simulation; geoelectric; geophysical measurement technique; hydrology; integral equation model; land surface; microwave signature; modified IEM; radar observation depth; radar remote sensing; radar scattering; soil moisture; terrain mapping; terrestrial electricity; variable dielectric profile; variable transition rate factor; vertical profile; Backscatter; Context modeling; Dielectric constant; Electromagnetic heating; Fresnel reflection; Hydrology; Meteorological radar; Radar scattering; Soil moisture; Surface soil;
Conference_Titel :
Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International
Print_ISBN :
0-7803-3836-7
DOI :
10.1109/IGARSS.1997.606417
