Zobrazeno 1 - 10
of 266
pro vyhledávání: '"Ali Khenchaf"'
Publikováno v:
Remote Sensing, Vol 15, Iss 14, p 3663 (2023)
Computing the Radar Cross-Section (RCS) of a given object is a topic of major importance for many applications, e.g., target detection and stealth technology. In this context, high-frequency asymptotic methods are widely used. In this article, we der
Externí odkaz:
https://doaj.org/article/90c39f566e664826aa572b60fb7104b7
Publikováno v:
Sensors, Vol 23, Iss 14, p 6605 (2023)
The atmospheric water vapor is commonly monitored from ground Global Navigation Satellite System (GNSS) measurements, by retrieving the tropospheric delay under the Zenith Wet Delay (ZWD) component, linked to the water vapor content in the atmosphere
Externí odkaz:
https://doaj.org/article/b7414f47994f4c5eade0ac2704ed7293
Publikováno v:
Remote Sensing, Vol 14, Iss 11, p 2686 (2022)
In the context of improving the dimensioning of observation and telecommunication, the characterization of the propagation canal is very important. Thus, accurate models of propagation phenomenona in their environment and above a rough surface (marit
Externí odkaz:
https://doaj.org/article/fdc1987cac0a4974a224a1bdc18c71b2
Publikováno v:
Sensors, Vol 22, Iss 13, p 4821 (2022)
A quantum illumination radar uses quantum entanglement to enhance photodetection sensitivity. The entanglement is quickly destroyed by the decoherence in an environment, although the sensitivity enhancement could survive thanks to quantum correlation
Externí odkaz:
https://doaj.org/article/2000d96baeac4505b8f06392a2893730
Publikováno v:
Sensors, Vol 22, Iss 9, p 3263 (2022)
Along with the rapid development of marine radar, and particularly those carried on aircraft, the detection of small-sized targets which pose an increasing threat has become one of the main areas of interest. However, by considering an observation ch
Externí odkaz:
https://doaj.org/article/a9fa62186508450785ddc1852daf5436
Publikováno v:
Remote Sensing, Vol 13, Iss 13, p 2443 (2021)
In the past decades, Bragg scattering has been considered to be an important scattering mechanism of microwave backscattering from sea surfaces. However, as reported in many recent literatures, non-Bragg scattering (which is often attributed to wave
Externí odkaz:
https://doaj.org/article/49e97b198d634210a7f03a747dd1de70
Publikováno v:
Remote Sensing, Vol 12, Iss 21, p 3631 (2020)
Wind information on SAR images are essential to characterize a marine environment in offshore or coastal area. More and more applications require high resolution wind field estimation. In this article, classical wind wave direction estimation methods
Externí odkaz:
https://doaj.org/article/6bd7285baa0d4950aee367e5fd86034e
Autor:
Truong-Ngoc Tan, Ali Khenchaf, Fabrice Comblet, Pierre Franck, Jean-Marc Champeyroux, Olivier Reichert
Publikováno v:
Applied Sciences, Vol 10, Iss 12, p 4335 (2020)
In the recent years, multi-constellation and multi-frequency have improved the positioning precision in GNSS applications and significantly expanded the range of applications to new areas and services. However, the use of multiple signals presents ad
Externí odkaz:
https://doaj.org/article/edb3778c5a914164872ac3c387363305
Publikováno v:
Remote Sensing, Vol 11, Iss 7, p 748 (2019)
This paper addresses the estimation of the height of a point scatterer over a sea surface via multipath exploitation for a High Range Resolution radar that is using pulse range compression, such as Synthetic Aperture Radars. We first focus our attent
Externí odkaz:
https://doaj.org/article/19b92c33fe894e3da06cea0e71d6f99a
Publikováno v:
Remote Sensing, Vol 10, Iss 12, p 1931 (2018)
This paper is devoted to investigating the electromagnetic (EM) backscattering from slick-free and slick-covered sea surfaces at various bands (L-band, C-band, X-band, and Ku-band) by using the second-order small slope approximation (SSA-2) and the m
Externí odkaz:
https://doaj.org/article/5edfaf2f17e74872b4380aa9bad89386