Significance of agricultural row structure on the microwave emissivity of soilsA series of field experiments was carried out to extend the data base available for verifying agricultural row effect models of emissivity. The row effects model was used to simulate a data base from which an algorithm could be developed to account for row effects when the scene dielectric constant and small-scale roughness are unknown. One objective of the study was to quantify the significance of row structure and to develop a practical procedure for removing the effects of periodic row structure on the microwave emissivity of a soil in order to use the emissivity values to estimate the soil moisture. A second objective was to expand the data set available for model verification through field observations using a truck-mounted 1.4-GHz microwave radiometer.
Promes, P. M. (Maryland, University College Park, United States)
Jackson, T. J. (USDA, Hydrology Laboratory, Beltsville MD, United States)
O'Neill, P. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)