Results 41 to 50 of about 294,690 (247)
Remote Sensing, 2019 Owing to the characteristics of how a laser interacts with the water surface and water column, the measured Light Detection and Ranging (LiDAR) intensity values are different with respect to the laser wavelength, the scanning geometry and the reflection ...
Wai Yeung Yan +2 more
doaj +1 more source
Airborne Raman Lidar and its Applications for Atmospheric Process Studies
EPJ Web of Conferences, 2016 Although ground-base Raman lidars are widely used for atmospheric observations, the capabilities of airborne Raman lidar is not fully explored. Here we presented two recently developed airborne Raman lidar systems for the studies of atmospheric boundary ...
Wang Zhien +9 more
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Airborne lidar estimates of photosynthesis profiles [PDF]
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016 The rate of photosynthesis in the ocean depends on the concentration of chlorophyll in the water, the light level, and the water temperature. The depth profile of chlorophyll concentration can be estimated by airborne backscatter lidar. Both the attenuation of a lidar pulse and the volume backscattering coefficient depend on chlorophyll concentration ...
openaire +1 more source
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Understanding fine‐scale surface changes is crucial for quantifying ecosystem dynamics and detecting landscape changes. Palsas, comparably small peatland elevations with an ice‐rich permafrost core, undergo natural cycles of growth and degradation. They can also serve as indicators of climate change in subarctic regions. Because they typically
Alexander Störmer +3 more
wiley +1 more source
Airborne lidar observations supporting the ADM-Aeolus mission for global wind profiling [PDF]
, 2012 The Atmospheric Dynamics Mission ADM-Aeolus of ESA will be the first lidar mission to sense the global wind field from space. The instrument is based on a direct-detection Doppler lidar operating at 354.9 nm with two spectrometers for aerosol/cloud ...
Witschas, Benjamin +5 more
core
All-Fiber Airborne Coherent Doppler Lidar to Measure Wind Profiles
EPJ Web of Conferences, 2016 An all-fiber airborne pulsed coherent Doppler lidar (CDL) prototype at 1.54μm is developed to measure wind profiles in the lower troposphere layer. The all-fiber single frequency pulsed laser is operated with pulse energy of 300μJ, pulse width of 400ns ...
Liu Jiqiao +9 more
doaj +1 more source
DENOISING OF 3D POINT CLOUDS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 A method to remove random errors from 3D point clouds is proposed. It is based on the estimation of a local geometric descriptor of each point. For mobile mapping LiDAR and airborne LiDAR, a combined standard mesurement uncertainty of the LiDAR system ...
E. Mugner, N. Seube
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Scaling turbulence drives the general circulation
Quarterly Journal of the Royal Meteorological Society, EarlyView.The NOAA Gulfstream SP4, which deployed the GPS dropsondes over the NE Pacific Ocean as part of the Winter Storms Project during the January–March periods of 2004, 2005 and 2006. Abstract Statistical multifractal analysis of airborne and dropsonde observations is used to show that persistence of velocity after molecular collisions breaks the continuous
Adrian F. Tuck
wiley +1 more source
Applied Sciences, 2020 Traffic sign detection is considered as one of the active research topics in transportation and computer vision. The previous works mainly focus on detecting traffic signs in images or in mobile light detection and ranging (LiDAR) data. In this paper, we
Mohammadreza Javanmardi +2 more
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Remote Sensing, 2021 Light detection and range (LiDAR) intensity is an important feature describing the characteristics of a target. The direct use of original intensity values has limitations for users, because the same objects may have different spectra, while different ...
Qiong Wu +4 more
doaj +1 more source