Results 11 to 20 of about 3,413 (211)

Identification of modal parameters of long-span bridges under various wind velocities

open access: yesAdvances in Bridge Engineering, 2022
The modal parameters identification of bridges under non-stationary environmental excitation has caught the attention of researchers. This paper studies the non-stationarity of wind velocity, and extracts the time-varying mean wind velocity based on a ...
Siying Lu, Lei Yan, Xuhui He, Hui Guo
doaj   +1 more source

Simultaneous Extraction of Planetary Boundary-Layer Height and Aerosol Optical Properties from Coherent Doppler Wind Lidar

open access: yesSensors, 2022
Planetary boundary-layer height is an important physical quantity for weather forecasting models and atmosphere environment assessment. A method of simultaneously extracting the surface-layer height (SLH), mixed-layer height (MLH), and aerosol optical ...
Yehui Chen   +5 more
doaj   +1 more source

PBL Height Retrievals during ASKOS Campaign

open access: yesEnvironmental Sciences Proceedings, 2023
This study analyzes the structure of the Planetary Boundary Layer (PBL) at Mindelo, Cabo Verde, where the ASKOS Campaign took place from 2021 to 2022. Datasets from ground-based remote sensing instruments and radiosondes are used to derive the PBL height,
Ioanna Tsikoudi   +10 more
doaj   +1 more source

SEGMENTATION OF POLARIMETRIC SAR IMAGES USIG WAVELET TRANSFORMATION AND TEXTURE FEATURES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Polarimetric Synthetic Aperture Radar (PolSAR) sensors can collect useful observations from earth’s surfaces and phenomena for various remote sensing applications, such as land cover mapping, change and target detection.
A. Rezaeian, S. Homayouni, A. Safari
doaj   +1 more source

Automated Detection of the Planetary Boundary Layer Height and Cloud in Qingdao Based on Morphological Processing

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Clouds have double functions for lidar: Noise and useful information. In this study, the clouds were separated from temporal-spatial coherent Doppler wind lidar with a high temporal resolution image based on the morphological open filter, which produced ...
Yehui Chen   +5 more
doaj   +1 more source

Assessing CALIOP-Derived Planetary Boundary Layer Height Using Ground-Based Lidar

open access: yesRemote Sensing, 2021
Coincident profiles from the space-borne and ground-based lidar measurements provide a unique opportunity to estimate the planetary boundary layer height (PBLH).
Man-Hae Kim   +7 more
doaj   +1 more source

Estimating Boundary Layer Height from LiDAR Data under Complex Atmospheric Conditions Using Machine Learning

open access: yesRemote Sensing, 2022
Reliable estimation of the atmospheric boundary layer height (ABLH) is critical for a range of meteorological applications, including air quality assessment and weather forecasting.
Zhenxing Liu   +4 more
doaj   +1 more source

CDF Space Covariance Matrix of Gabor Wavelet With Convolutional Neural Network for Texture Recognition

open access: yesIEEE Access, 2019
A novel method for texture image recognition is proposed in this paper. The aim of the proposed method is to represent texture by combining the Gabor wavelet transform and deep learning which are efficient techniques for image analysis.
Chaorong Li   +5 more
doaj   +1 more source

A computer-aided diagnostic framework for coronavirus diagnosis using texture-based radiomics images

open access: yesDigital Health, 2022
The accurate and rapid detection of the novel coronavirus infection, coronavirus is very important to prevent the fast spread of such disease. Thus, reducing negative effects that influenced many industrial sectors, especially healthcare.
Omneya Attallah
doaj   +1 more source

PBL Height Retrievals at a Coastal Site Using Multi-Instrument Profiling Methods

open access: yesRemote Sensing, 2022
The objective of this study was the estimation of the dynamic evolution of the Planetary Boundary Layer (PBL) height, using advanced remote sensing measurements from Finokalia Station, where the Pre-TECT Campaign took place during 1–26 April 2017 ...
Ioanna Tsikoudi   +13 more
doaj   +1 more source

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