A General Characterization for Polarimetric Scattering From Vegetation Canopies

Autor:	Motofumi Arii, Jakob van Zyl, Yunjin Kim
Rok vydání:	2010
Předmět:	Distribution (number theory) Scattering Covariance matrix Polarimetry General Earth and Planetary Sciences Probability density function Statistical physics Function (mathematics) Electrical and Electronic Engineering Covariance Randomness Mathematics Remote sensing
Zdroj:	IEEE Transactions on Geoscience and Remote Sensing. 48:3349-3357
ISSN:	1558-0644 0196-2892
DOI:	10.1109/tgrs.2010.2046331
Popis:	Current polarimetric model-based decomposition techniques are limited to specific types of vegetation because of their assumptions about the volume scattering component. In this paper, we propose a generalized probability density function based on the nth power of a cosine-squared function. This distribution is completely characterized by two parameters; a mean orientation angle and the power of the cosine-squared function. We show that the underlying randomness of the distribution is only a function of the power of the cosine-squared function. We then derive the average covariance matrix for various different elementary scatterers showing that the result has a very simple analytical form suitable for use in model-based decomposition schemes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ee5b72a27e3e4c4cc27439699b1b1000 https://doi.org/10.1109/tgrs.2010.2046331 Zobrazit plný text záznamu