Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Maria Antonia Maisto"'
Publikováno v:
IEEE Access, Vol 12, Pp 80283-80299 (2024)
This paper aims to introduce a new strategy for the detection of faulty elements in phased array antennas. The approach takes advantage on the possibility in phased array to introduce the steering diversity. Accordingly, by collecting the radiated fi
Externí odkaz:
https://doaj.org/article/54834081489e4c9d9e9ae2f20237951f
Publikováno v:
Sensors, Vol 24, Iss 9, p 2887 (2024)
In this contribution, a wearable microwave imaging system for real-time monitoring of brain stroke in the post-acute stage is described and validated. The system exploits multistatic/multifrequency (only 50 frequency samples) data collected via a low
Externí odkaz:
https://doaj.org/article/bed9bc49678443078691841784070be1
Publikováno v:
IEEE Access, Vol 10, Pp 82336-82345 (2022)
The problem of detecting defective turned-off elements in antenna arrays from near-field measurements is addressed. In particular, the focus here is to reduce the number of measurements in order to positively affect the acquisition time. Such an issu
Externí odkaz:
https://doaj.org/article/9d165dcb5b434f84b86a33b688c8259a
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 3, Pp 333-341 (2022)
In this paper, the problem of how to spatially sample the scattered field in microwave through-the wall imaging is addressed. To this end, a two-dimensional scalar configuration for a three-layered back-ground medium is considered under a linearized
Externí odkaz:
https://doaj.org/article/1b381e9ec10e46d4928b240ff4507aa7
Publikováno v:
Remote Sensing, Vol 15, Iss 12, p 3012 (2023)
In this paper, we are concerned with microwave subsurface imaging achieved by inverting the linearized scattering operator arising from the Born approximation. In particular, we consider the important question of reducing the required data to achieve
Externí odkaz:
https://doaj.org/article/5a8f308bcbb6450fa81bc24b48ea52ad
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 2, Pp 3-13 (2021)
This article deals with microwave subsurface imaging achieved by inverting the linearized scattering operator. The focus is on the determination of a strategy for spatially sampling the data which allows to reduce the spatial data measurements and at
Externí odkaz:
https://doaj.org/article/68da9485482b4f26b179f1a4b7ff8d46
Publikováno v:
IEEE Access, Vol 9, Pp 62255-62265 (2021)
The sampling of the near-field radiated by a planar source observed over a finite planar aperture is addressed. To this end, we employ the warping method that amounts to properly change the observation variables and finding the sampling points as tho
Externí odkaz:
https://doaj.org/article/975bcdae40624e9fa6e1ad27d92fa9f0
Publikováno v:
Sensors, Vol 21, Iss 14, p 4724 (2021)
This paper deals with an inverse scattering problem under a linearized scattering model for a multi-static/multi-frequency configuration. The focus is on the determination of a sampling strategy that allows the reduction of the number of measurement
Externí odkaz:
https://doaj.org/article/2c705c777a9040dfa233878b5e952fe7
Publikováno v:
Journal of Imaging, Vol 5, Iss 6, p 61 (2019)
This paper deals with the problem of estimating the RCS from near-field data by image-based approaches. In particular, a rigorous focusing procedure based on a weighted adjoint scheme, which is also applicable to an arbitrary measurement curve, is de
Externí odkaz:
https://doaj.org/article/007e44a8dd2946768784d714d6593a5b
Publikováno v:
International Journal of Antennas and Propagation, Vol 2013 (2013)
The problem of studying how spatial diversity impacts on the spectrum (singular values) of the radiation operator is addressed. This topic is of great importance because of its connection with the so-called number of degrees of freedom concept which
Externí odkaz:
https://doaj.org/article/b4f76e08cb5b43178d17bd7a6de637bb