2 research outputs found
Imaging ionospheric irregularities by earth observation radar satellite
The sensitivity of Synthetic Aperture Radar (SAR) satellite signal in the L-band to
ionospheric plasma density is used to obtain two-dimensional imaging of
ionospheric density irregularities. As an application for equatorial ionosphere, we have
recently reported first simultaneous observation of equatorial plasma bubble by the
ALOS-2/PALSAR-2 satellite and a ground 630-nm airglow imager in northern Brazil.
In this case, SAR ionospheric scintillation are represented as stripe-like signature of
radar image over the terrain along the local magnetic field lines near an airglow
depletion region. This so-called SAR scintillation stripes are discussed to be the
signature of existing small-scale plasma irregularities with the scale size of hundreds of
meters associated with equatorial plasma bubbles. We present the observational setup
and the interpretation of SAR signal parameters to characterize the two-dimensional
ionospheric density structures, and discuss future studies
Advances in Optimization and Nonlinear Analysis
The present book focuses on that part of calculus of variations, optimization, nonlinear analysis and related applications which combines tools and methods from partial differential equations with geometrical techniques. More precisely, this work is devoted to nonlinear problems coming from different areas, with particular reference to those introducing new techniques capable of solving a wide range of problems. The book is a valuable guide for researchers, engineers and students in the field of mathematics, operations research, optimal control science, artificial intelligence, management science and economics