Results 21 to 30 of about 1,664 (168)

Another look at the Rayleigh angle backscattering [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1987
The increased backscattering from a liquid-solid interface at the Rayleigh angle is a well-known indication of leaky surface wave generation (similar phenomena were observed from thin plates immersed in liquid due to leaky Lamb wave generation, too). This simple technique has proved to be very useful in material evaluation via measuring both surface ...
Peter B. Nagy, Laszlo Adler
openaire   +1 more source

Enhancing Detection Performance of the Phase-Sensitive OTDR Based Distributed Vibration Sensor Using Weighted Singular Value Decomposition

open access: yesApplied Sciences, 2021
We propose a weighted singular value decomposition (WSVD) to reduce the random noise in the Rayleigh backscattering signal of the phase-sensitive optical time domain reflectometry (Φ-OTDR) to enhance the detection performance of the distributed vibration
Khurram Naeem   +3 more
doaj   +1 more source

Studying the Double Rayleigh Backscattering Noise Effect on Fiber-Optic Radio Frequency Transfer

open access: yesIEEE Photonics Journal, 2021
We report the effect of the double Rayleigh backscattering (DRB) noise, in which the interference of the signal light with the double Rayleigh backscattered light, on the fiber-optic radio-frequency (RF) transfer system.
Qi Li   +3 more
doaj   +1 more source

Backscattering Statistics of Indoor Full-Polarization Scatterometric and Synthetic Aperture Radar Measurements of a Rice Field

open access: yesRemote Sensing, 2023
The backscattering coefficient σ0 of a rice field is closely related to the amplitude, power, and phase of its radar backscattered signals. An investigation of the statistics of indoor full-polarization scatterometric and synthetic aperture radar (SAR ...
Xiangchen Liu   +5 more
doaj   +1 more source

A new lidar inversion method using a surface reference target applied to the backscattering coefficient and lidar ratio retrievals of a fog-oil plume at short range [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
In this paper, a new elastic lidar inversion equation is presented. It is based on the backscattering signal from a surface reference target (SRT) rather than that from a volumetric layer of reference (Rayleigh molecular scatterer) as is usually done ...
F. Gaudfrin   +6 more
doaj   +1 more source

Advances in atmospheric temperature profile measurements using high spectral resolution lidar

open access: yesEPJ Web of Conferences, 2018
This paper reports the atmospheric temperature profile measurements using a University of Wisconsin-Madison High Spectral Resolution Lidar (HSRL) and describes improvements in the instrument performance.
Razenkov Ilya I., Eloranta Edwin W.
doaj   +1 more source

A Selectable Single-Mode Erbium Fiber Laser With Mach-Zehnder Interferometer and Rayleigh Injection Scheme

open access: yesIEEE Photonics Journal, 2022
In the paper, a hybrid Mach-Zehnder interferometer (MZI) and Rayleigh backscattering (RB) injection is designed and applied in the erbium-doped fiber (EDF) ring laser configuration.
Chien-Hung Yeh   +4 more
doaj   +1 more source

Open Source SDR Frontend and Measurements for 60-GHz Wireless Experimentation

open access: yesIEEE Access, 2015
This paper aims to make 60-GHz experimentation possible for a wider range of research groups. We do this by describing a low-cost front-end that can be used in combination with any baseband processing platform.
Per Zetterberg, Ramin Fardi
doaj   +1 more source

Hybrid WDM FSO Fiber Access Network With Rayleigh Backscattering Noise Mitigation

open access: yesIEEE Access, 2020
In the paper, we present and investigate an integrated wavelength-division-multiplexing (WDM) free space optical (FSO) fiber access network for 51 km long-reach connection. Here, the proposed network architecture also can mitigate Rayleigh backscattering
Chien-Hung Yeh   +3 more
doaj   +1 more source

Simultaneous harvest-and-transmit ambient backscatter communications under Rayleigh fading [PDF]

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
Les communications à rétrodiffusion ambiante sont un paradigme émergent et un catalyseur clé de la connectivité omniprésente des appareils sans fil de faible puissance. Il est principalement bénéfique dans l'Internet des objets (IoT) et dans les situations où les capacités de calcul et de connectivité s'étendent aux capteurs et aux appareils miniatures
Furqan Jameel   +3 more
openaire   +4 more sources

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