Bernardi, Gabriella (2011) INNOVATIVE FRACTAL-BASED MODELS FOR RADAR ALTIMETER DATA. [Tesi di dottorato]

[img]
Preview
PDF
Bernardi_PhD_Thesis.pdf

Download (3MB) | Preview
Item Type: Tesi di dottorato
Language: Italiano
Title: INNOVATIVE FRACTAL-BASED MODELS FOR RADAR ALTIMETER DATA
Creators:
CreatorsEmail
Bernardi, Gabriellagabernar@gmail.com
Date: 30 November 2011
Number of Pages: 98
Institution: Università degli Studi di Napoli Federico II
Department: Ingegneria biomedica, elettronica e delle comunicazioni
Doctoral School: Ingegneria dell'informazione
PHD name: Ingegneria elettronica e delle telecomunicazioni
PHD cycle: 23
PHD Coordinator:
nameemail
Rinaldi, Niccolònirinald@unina.it
Tutor:
nameemail
Riccio, Danieledariccio@unina.it
Date: 30 November 2011
Number of Pages: 98
Uncontrolled Keywords: fractals, multi-scale model, fractal scattering, altimeter echo simulation.
MIUR S.S.D.: Area 09 - Ingegneria industriale e dell'informazione > ING-INF/02 - Campi elettromagnetici
Date Deposited: 25 Jul 2012 10:15
Last Modified: 30 Apr 2014 19:49
URI: http://www.fedoa.unina.it/id/eprint/9029

Abstract

An innovative electromagnetic model for the radar echoes received by a microwave altimeter is proposed: it is based on fractal models employed both to describe the natural surface and to evaluate the surface scattering behaviour. The scattering surface is modelled by means of the fractional Brownian model (fBm) process, whose realizations are obtained by using the band-limited Weierstrass-Mandelbrot (WM) function. The scattering process is evaluated by means of the Physical Optics solution specifically derived for fractal surfaces. Rationale to apply this solution to the evaluation (in time domain) of the received echoes is provided. Dependence of the return pulse shapes on surface topography at different roughness scales is highlighted: some relevant meaningful examples are presented. Simulation results are provided to show the potential of the proposed technique that could be the fundamental element to generate an atlas of expected returns from a given radar altimeter.

Actions (login required)

View Item View Item