Results 61 to 70 of about 64,214 (203)

An evaluation of errors observed in the measurement of low wind velocities [PDF]

open access: yes, 1986
Measurements of low wind velocities (the absolute value of V sub H is approx. equal to 6 m/s) with a VHF wind profiler can be difficult if ground clutter or other biases in the system dominate in altering the position of the perceived peak in the ...
Thomson, D. W., Williams, S. R.
core   +1 more source

Small Foreign Object Debris Detection for Millimeter-Wave Radar Based on Power Spectrum Features

open access: yesSensors, 2020
Foreign object debris (FOD) detection can be considered a kind of classification that distinguishes the measured signal as either containing FOD targets or only corresponding to ground clutter.
Peishuang Ni   +4 more
doaj   +1 more source

Empirical model for SAR ground clutter data

open access: yesIET Signal Processing, 2017
In this study, the authors present an effective and flexible statistical model, called Burr Type‐XII distribution (BXIID), for empirical modelling of synthetic aperture radar (SAR) clutter amplitude. Also, an estimator based on method of log‐cumulants (MoLC) is proposed for the parameters of BXIID.
Dheeren Ku Mahapatra, Lakshi Prosad Roy
openaire   +1 more source

Assessing the performance of ultrafast vector flow imaging in the neonatal heart via multiphysics modeling and In vitro experiments [PDF]

open access: yes, 2016
Ultrafast vector flow imaging would benefit newborn patients with congenital heart disorders, but still requires thorough validation before translation to clinical practice. This paper investigates 2-D speckle tracking (ST) of intraventricular blood flow
Fadnes, Solveig   +6 more
core   +2 more sources

Recognition of Ground Clutter in Single-Polarization Radar Based on Gated Recurrent Unit

open access: yesRemote Sensing
A new method is proposed for identifying ground clutter in single-polarization radar data based on the gated recurrent unit (GRU) neural network. This method needs five independent input variables related to radar reflectivity structure, which are the ...
Jiaxin Wang   +3 more
doaj   +1 more source

GPR Antipersonnel Mine Detection Based on Tensor Robust Principal Analysis

open access: yesRemote Sensing, 2019
The ground Penetrating Radar (GPR) is a promising remote sensing modality for Antipersonnel Mine (APM) detection. However, detection of the buried APMs are impaired by strong clutter, especially the reflection caused by rough ground surfaces.
Xiaoji Song   +3 more
doaj   +1 more source

Near-Surface Interface Detection for Coal Mining Applications Using Bispectral Features and GPR [PDF]

open access: yes, 2005
The use of ground penetrating radar (GPR) for detecting the presence of near-surface interfaces is a scenario of special interest to the underground coal mining industry.
A. Merwe van der   +30 more
core   +3 more sources

Synthetic aperture radar imagery of airports and surrounding areas: Study of clutter at grazing angles and their polarimetric properties [PDF]

open access: yes
The statistical description of ground clutter at an airport and in the surrounding area is addressed. These data are being utilized in a program to detect microbursts. Synthetic aperture radar data were collected at the Denver Stapleton Airport. Mountain
Clinthorne, James T.   +2 more
core   +1 more source

Systems issues in airborne Doppler radar/LIDAR certification [PDF]

open access: yes
This report outlines: (1) thesis; (2) ground clutter challenge; (3) moving scatters (birds, bugs); (4) range ambiguities; and rain ...
Evans, James
core   +1 more source

Deep Network for Simultaneous Decomposition and Classification in UWB-SAR Imagery

open access: yes, 2018
Classifying buried and obscured targets of interest from other natural and manmade clutter objects in the scene is an important problem for the U.S. Army.
Guo, Tiantong   +3 more
core   +1 more source

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