Results 31 to 40 of about 3,126,769 (201)

Normalization of Echo Features Derived from Full-Waveform Airborne Laser Scanning Data

open access: yesRemote Sensing, 2015
Full-waveform airborne laser scanning systems provide fundamental observations for each echo, such as the echo width and amplitude. Geometric and physical information about illuminated surfaces are simultaneously provided by a single scanner.
Yu-Ching Lin
doaj   +1 more source

Waveform inversion of the S reflector west of Spain: fine structure of a detachment fault. [PDF]

open access: yes, 2005
The S reflection west of Iberia has been interpreted as a low-angle detachment fault separating crustal fault blocks from partially serpentinized mantle. We apply full waveform inversion to investigate the fine structure of S.
Minshull, TA   +7 more
core   +1 more source

PRELIMINARY QUALITY ANALYSIS OF GF-7 SATELLITE LASER ALTIMETER FULL WAVEFORM DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The full-waveform data is the core data of GaoFen-7 (GF-7) satellite laser altimeter, and evaluation of waveform data quality is an important step and premise for satellite laser altimetry and quality control.
G. Li   +12 more
doaj   +1 more source

Full waveform tomographic images of the peak ring at the Chicxulub impact crater [PDF]

open access: yes, 2011
17/06/013 PDF version attached, OK to pub.Peak rings are a feature of large impact craters on the terrestrial planets and are generally believed to be formed from deeply buried rocks that are uplifted during crater formation.
Grieve, R. A. F.   +20 more
core   +1 more source

Full-waveform adjoint tomography package

open access: yes, 2021
This is an inversion package designed for the SPECFEM3D to do full-waveform adjoint tomography (FWAT). The FWAT can perform both noise full-waveform inversion, teleseismic full-waveform inversion, and their joint inversion. This trial version of the FWAT
Kai Wang
core   +1 more source

Three-Dimensional Laser Imaging with a Variable Scanning Spot and Scanning Trajectory

open access: yesPhotonics, 2021
Traditional lidar scans the target with a fixed-size scanning spot and scanning trajectory. Therefore, it can only obtain the depth image with the same pixels as the number of scanning points.
Ao Yang   +4 more
doaj   +1 more source

A fast Maximum Likelihood method for improving AMCW lidar precision using waveform shape [PDF]

open access: yes, 2009
Amplitude Modulated Continuous Wave imaging lidar systems use the time-of-flight principle to determine the range to objects in a scene. Typical systems use modulated illumination of a scene and a modulated sensor or image intensifier.
A. A. Dorrington   +7 more
core   +1 more source

SIMULATION OF FULL-WAVEFORM LASER ALTIMETER ECHOWAVEFORM [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Change of globe surface height is an important factor to study human living environment. The Geoscience Laser Altimeter System (GLAS) on ICESat is the first laser-ranging instrument for continuous global observations of the Earth.
Y. Lv   +5 more
doaj   +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

Fetal electrocardiogram: ST waveform analysis in intrapartum surveillance [PDF]

open access: yes, 2007
ST waveform analysis of fetal electrocardiogram (ECG) for intrapartum surveillance (STAN) is a newly introduced method for fetal surveillance. The purpose of this commentary is to assist in the proper use of fetal ECG in combination with cardiotocography
I Amer‐Wahlin   +18 more
core   +1 more source

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