Results 221 to 230 of about 52,927 (253)

Airborne Lidar in Archaeology: Overview and a Case Study

2013
Airborne laser scanning (ALS) is an optical measurement technique for obtaining high-precision information about the Earth's surface including basic terrain mapping (Digital terrain model, bathymetry, corridor mapping), vegetation cover (forest assessment and inventory), coastal and urban areas.
Masini, N.a, Lasaponara, R.b
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Study of the airborne LIDAR data filtering methods

2010 18th International Conference on Geoinformatics, 2010
Filter of airborne LIDAR data is a primary step of data processing. This paper reviews the literature of filter algorithms from aspects of theory and performance. The methods of filtering usually are slope-based surface-based and clustering/segmentation-based.
Yangyang Zhang, Linjie Men
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Airborne lidar for fisheries applications

Optical Engineering, 2001
An airborne lidar using commercial, off-the-shelf components was developed by the National Oceanic and Atmospheric Administration for fisheries' surveys. We make several test flights of the system and develop several signal processing techniques to discriminate between the returns from fish and from small particles in the water. We use these techniques
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Airborne lidar for environmental measurements

LEOS '95. IEEE Lasers and Electro-Optics Society 1995 Annual Meeting. 8th Annual Meeting. Conference Proceedings, 2002
Now being tested is an airborne IR differential absorption lidar (DIAL) system operating in the 3- to 5-/spl mu/m wavelength region. The system employs two Nd:YAG lasers each pumping a KTiOAsO/sub 4/ (KTA) optical parametric oscillator. The system will be used to measure methane column-content concentrations over regional areas.
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Airborne LiDAR Data Processing

2016
This chapter introduces the main data analysis methods associated with topographic and bathymetric airborne LiDAR systems. Data delivered by these sensors can be of two types: the majority of commercial systems deliver three-dimensional (3D) point clouds (systems referred to as multiecho), whereas a limited number directly provides the whole laser ...
Mallet, Clement, Chehata, Nesrine, Bailly, Jean-Stéphane   +2 more
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Airborne Differential Absorption Lidar

SPIE Proceedings, 1988
Airborne differential absorption lidarPeter RichterTechnical University Budapest, Department of Atomic Physics1521 Budapest, Budafoki ut 8. HungaryABSTRACTThe optical setup of an airborne differential absorption lidar based on optical heterody-ne detection of topographic backscattering of CW tunable CO2 lasers will be shown.
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An airborne lidar system for pollution detection and mapping

Conference Record Southcon, 1994
Air pollution is known to be a serious health problem in many localities. This paper describes an airborne lidar system which can be used to map the sources and extent of a wide variety of toxic pollutants. The airborne lidar system is composed of two high-rep rate narrow linewidth excimer-pumped dye laser systems which can be easily tuned across the ...
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Airborne LiDAR in Mountain Archaeology

Abstract Airborne LiDAR, or airborne Light Detection and Ranging, is a remote sensing technique that measures, among other things, the terrain elevation. In the past two decades, it has become an indispensable component of landscape archaeology, especially for archaeological prospection.
Lozić, Edisa, Štular, Benjamin
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Airborne Lidar Systems

2005
Syed Ismail, Edward Browell, William Grant   +2 more
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Point2Roof: End-to-end 3D building roof modeling from airborne LiDAR point clouds

ISPRS Journal of Photogrammetry and Remote Sensing, 2022
Nan Song, Ruisheng Wang, Jian Yao
exaly