Real-valued solutions to an inverse fresnel problem in GNSS-R

Patrizia Savi, Albert J. Milani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Global Navigation Satellite System Reflectometry can be used to derive information about the composition or the properties of ground surfaces, by analyzing GPS signals reflected by the ground. The received power of the signal is proportional to the modulus of the perpendicular and parallel polarization Fresnel coefficients. These coefficients depend on the incidence angle ?, and on the ground's dielectric constant e, which provides information on the composition and properties of the ground. Thus, one has to solve the inverse problem, consisting of finding the value of e from the known value of ? and the measured values of the Fresnel reflection coefficients. In general, e is a complex number; in some cases (e.g., for non-dispersive soils), the imaginary part of e can be neglected, and a real value of e is sought. We discuss the mathematical solvability of a particular type of inverse Fresnel problem for real unknown e.

Original languageEnglish
Title of host publication2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3327-3330
Number of pages4
ISBN (Electronic)9781538671504
DOIs
Publication statusPublished - Oct 31 2018
Event38th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Valencia, Spain
Duration: Jul 22 2018Jul 27 2018

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume2018-July

Conference

Conference38th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018
CountrySpain
CityValencia
Period7/22/187/27/18

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

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