Results 21 to 30 of about 639,415 (233)

Piecewise Adaptive-Norm Trend Filtering Method for ICESat/GLAS Waveform Data Denoising

open access: yesIEEE Access, 2020
The Geoscience Laser Altimeter System (GLAS) aboard Ice, Cloud and land Elevation Satellite (ICESat) was able to capture the full waveform of backscattered laser pulse.
Lianying Li   +3 more
doaj   +1 more source

Denoising for satellite laser altimetry full-waveform data based on EMD-Hurst analysis

open access: yesInternational Journal of Digital Earth, 2020
Full-waveform decomposition is crucial for obtaining accurate satellite-ground distance, the accuracy of which is severely affected by noises. However, the traditional filters all depend on filtering parameters.
Zhijie Zhang   +5 more
doaj   +1 more source

A signal denoising method for full-waveform LiDAR data [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
The lack of noise reduction methods resistant to waveform distortion can hamper correct and accurate decomposition in the processing of full-waveform LiDAR data.
M. Azadbakht   +6 more
doaj   +1 more source

Development of an RF IV waveform based stress test procedure for use on GaN HFETs [PDF]

open access: yes, 2012
This paper reports on the development of an RF IV waveform based stress test procedure. DC and low-voltage RF characterisation was carried out before and after high power RF stress.
Tasker, Paul J.   +3 more
core   +1 more source

Well-conditioned asymptotic waveform evaluation for efficient computation of wave-scattering from perfectly conducting bodies [PDF]

open access: yes, 2007
This paper presents a model order reduction algorithm for the surface electric field integral equation (EFIE) formulation of the electromagnetic wave scattering problem.
Conor Brennan   +5 more
core   +2 more sources

LAI estimation based on physical model combining airborne LiDAR waveform and Sentinel-2 imagery

open access: yesFrontiers in Plant Science, 2023
Leaf area index (LAI) is an important biophysical parameter of vegetation and serves as a significant indicator for assessing forest ecosystems. Multi-source remote sensing data enables large-scale and dynamic surface observations, providing effective ...
Zixi Shi   +12 more
doaj   +1 more source

Point Cloud Classification and Accuracy Analysis Based on Feature Fusion [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2021
A method for land-cover classification was proposed based on the fusion of features generated from waveform data and point cloud respectively. It aims to partially overcome the ineffectiveness of many traditional classifiers caused by the fact that point
Xiaochen WANG,Hongchao MA,Liang ZHANG,Zhan CAI,Haichi MA
doaj   +1 more source

Predicting loss in magnetic steels under arbitrary induction waveform and with minor hysteresis loops [PDF]

open access: yes, 2004
We have studied ways of predicting power losses in soft magnetic laminations for generic time dependence of the periodic magnetic polarization J(t). We found that, whatever the frequency and the induction waveform, the loss behavior can be quantitatively
Fiorillo, F.   +3 more
core   +1 more source

Estimation of 3D vegetation structure from waveform and discrete return airborne laser scanning data [PDF]

open access: yes, 2012
This study presents and compares new methods to describe the 3D canopy structure with Airborne Laser Scanning (ALS) waveform data as well as ALS point data.
Olofsson, Kenneth,   +12 more
core   +1 more source

Tree height inversion combining light detection and ranging and optical remote sensing data [PDF]

open access: yesE3S Web of Conferences, 2020
Tree barriers in transmission line corridors are an important safety hazard.Scientific prediction of tree height and monitoring tree height changes are essential to solve this hidden danger.
Wang Kunlin, Ma Yi, Zhou Fangrong
doaj   +1 more source

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