Numerical Model of Microwave Backscattering and Emission from Terrain Covered with Vegetation
نویسندگان
چکیده
A computational model for estimating microwave scattering and emission from the earth’s surface covered with vegetation (MESCAM) has been developed. The model is founded on relevant electromagnetic properties of the vegetation and of the underlying terrain and takes into account multiple scattering both within the vegetation and between vegetation and underlying soil. By selecting the appropriate scattering functions, the backscattering coefficient and the emissivity can be estimated in a wide range of frequencies, for different sensor configurations, and for a variety of terrain and vegetation characteristics.
منابع مشابه
A Microwave Scattering Model of Vegetated Surfaces Based on Bor/dda and Nmm3d for Smap Mission
1. ABSTRACT In this paper, we present forward model of the microwave backscattering from a vegetated terrain at L band for application in the upcoming SMAP (Snow Moisture Active and Passive) mission. The objective of the SMAP mission is to provide global measurements of soil moisture and its freeze/thaw state [1]. These measurements will be used to enhance understanding of processes that link t...
متن کاملAsphalt Pavement Performance Model of Airport Using Microwave Remote Sensing Satellite
The purpose of this study is to build the binary logit model of an airport pavement that could monitor the pavement condition in near real time using microwave remote sensing satellite, then the relationship between the international roughness index (IRI) of an airport and backscattering values from PALSAR images of the ALOS satellite was determined. Total 390 data were used in analysis. This m...
متن کاملMicrowave radiometry of snow covered terrain and calibration of an interferometric radiometer
Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Juha Lemmetyinen Name of the doctoral dissertation Microwave radiometry of snow covered terrain and calibration of an interferometric radiometer Publisher School of Electrical Engineering Unit Department of Radio Science and Engineering Series Aalto University publication series DOCTORAL DISSERTATIONS 142/2012 Field of researc...
متن کاملEffect of forests on the retrieval of snow parameters from backscatter measurements
In preparation for the CoReH2O satellite mission, one of the three missions selected for scientific and technical feasibility studies within the Earth Explorer Programme of the ESA, experimental and theoretical studies have been under way in order to improve methods for the retrieval of snow physical properties from SAR data. The aim of this paper is to investigate the impact of vegetation in t...
متن کاملA Synergistic Methodology for Soil Moisture Estimation in an Alpine Prairie Using Radar and Optical Satellite Data
This paper presents a microwave/optical synergistic methodology to retrieve soil moisture in an alpine prairie. The methodology adequately represents the scattering behavior of the vegetation-covered area by defining the scattering of the vegetation and the soil below. The Integral Equation Method (IEM) was employed to determine the backscattering of the underlying soil. The modified Water Clou...
متن کامل