Title :
Microwave emission model for dry snow by using radiative transfer and strong fluctuation theory
Author :
Huining, Wang ; Pulliainen, Jouni ; Hallikainen, Martti
Author_Institution :
Lab. of Space Technol., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
This study develop a model to describe the microwave emission from dry snow cover. The model is based on radiative transfer and strong fluctuation theory. In the model, the effective permittivity for a spherical symmetric correlation function with exponential form is used. The phase matrix and scattering coefficients in the radiative transfer equation for a spherical symmetric correlation function are derived by using strong fluctuation theory. The radiative transfer equations are solved by using Gaussian quadrature and eigenanalysis technique. Comparisons with literature based brightness temperature data of dry snow at 5, 10.7, 18, 37 GHz are made
Keywords :
hydrological techniques; radiative transfer; radiometry; remote sensing; snow; terrain mapping; 5 to 37 GHz; EHF; Gaussian quadrature; SHF; brightness temperature; dry snow; effective permittivity; eigenanalysis; hydrology; measurement technique; microwave emission model; microwave radiometry; phase matrix; radiative transfer; radiative transfer equation; remote sensing; scattering coefficient; snow cover; snowcover; snowpack; spherical symmetric correlation function; strong fluctuation theory; Brightness temperature; Differential equations; Fluctuations; Ice; Microwave theory and techniques; Particle scattering; Permittivity; Snow; Space technology; Symmetric matrices;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International
Conference_Location :
Hamburg
Print_ISBN :
0-7803-5207-6
DOI :
10.1109/IGARSS.1999.775069
