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Filters
The Local Median Filtering Method for Correcting the Laser Return Intensity Information from Discrete Airborne Laser Scanning Data
2020
Remote Sensing
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Laser return intensity (LRI) information obtained from airborne laser scanning (ALS) data has been used to classify land cover types and to reveal canopy physiological features. ...
However, the sensor-related and environmental parameters may introduce noise. In this study, we developed a local median filtering (LMF) method to point-by-point correct the LRI information. ...
/) to provide the open-source ALS dataset and related information about data collection. ...
doi:10.3390/rs12101681
fatcat:3ufxp2h4qvbplocyhtyu2rlxrm
Lidar for Biomass Estimation
[chapter]
2011
Biomass - Detection, Production and Usage
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Spaceborne geoscience laser altimeter system (GLAS) data on the other hand are intended to use mainly for scientific studies of sea ice elevation (Zwally et al., 2002; Kurtz et al., 2008; Xing et al., ...
Apart from the land cover classification Lidar intensity data can be used to differentiate materials such as asphalt, grass, roof, and trees (Hasegawa, 2006; Donoghue et al., 2007; Kim, 2009; Song et al ...
Discrete return airborne laser systems (ALS) have the benefit of providing data over a large area, but are restricted by their laser pulse return density as ⁄ ratio. ...
doi:10.5772/16919
fatcat:5ldjobm74vfwbdgkoxte272xti
Discrete Return Lidar in Natural Resources: Recommendations for Project Planning, Data Processing, and Deliverables
2009
Remote Sensing
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Intensity: The peak power ratio of the laser return to the emitted laser. This is a function of surface reflectivity. Last Return: The last measurement in a laser pulse. ...
Geometric Correction: The process correcting the GPS readings, tying the data to local controls, and applying a coordinate system to the lidar point cloud. ...
The criterion for collecting multiple returns is based on the intensity of the laser energy returned to the sensor, with three to five return systems being most common. ...
doi:10.3390/rs1040776
fatcat:xoxscl5uijhepmrdllef2u6vt4
Comparison of discrete and full-waveform ALS for dead wood detection
2013
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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In this study the applicability of airborne laser scanning data as the single data source for the detection of downed trees in forest habitats is investigated. ...
Due to large amount of false positives, the correctness using discrete ALS data is poorer (63.1%) than for full-waveform data (89.9%). ...
"Discrete" information refers to discrete return laser scanning, however only one data set is used for the entire analysis. This data set was generated with a full-waveform digitizing laser scanner. ...
doi:10.5194/isprsannals-ii-5-w2-199-2013
fatcat:cub23n6e7nfgbm7eletlt65lli
Full-Waveform LiDAR Fast Analysis of a Moderately Turbid Bay in Western France
2019
Remote Sensing
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A transposition between range and bottom-top information facilitates the water index correction below the sea water level provided by 1064-nm discrete echoes. ...
each pixel of the water column into spectrum of intensity ranging from 0 to 1 from bottom to top. ...
Martin Juigner from the LETG Nantes for GPS ground control points and Martin Sanchez from the LPG Nantes for turbidity data in La Baule. ...
doi:10.3390/rs11020117
fatcat:wgb7ycjgibba7p5f7ouukwfp5i
Lidar Remote Sensing for Biomass Assessment
[chapter]
2012
Remote Sensing of Biomass - Principles and Applications
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are used to provide examples of small footprint, discrete return laser scanning. ...
Full waveform and discrete return systems A waveform is the signal that is returned to the lidar sensor after having been scattered from surfaces that the laser pulse intercepts. ...
doi:10.5772/17479
fatcat:mhodv3bx4re5td4h2boq4k5efi
Full-Waveform Airborne Laser Scanning in Vegetation Studies—A Review of Point Cloud and Waveform Features for Tree Species Classification
2016
Forests
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In recent years, small-footprint full-waveform airborne laser scanning has become readily available and established for vegetation studies in the fields of forestry, agriculture and urban studies. ...
These laser scanning features describe an observable characteristic of the returned laser signal (e.g., signal amplitude) or a quantity of an object (e.g., height-width ratio of the tree crown). ...
airborne laser scanning data for tree species classification. ...
doi:10.3390/f7090198
fatcat:rtaau7f5ybftlhp4aazpwp5oju
Satellite lidar vs. small footprint airborne lidar: Comparing the accuracy of aboveground biomass estimates and forest structure metrics at footprint level
2011
Remote Sensing of Environment
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The overall goal of this paper was to compare biomass estimates and height metrics obtained by processing GLAS waveform data and spatially coincident discrete-return airborne lidar data over forest conditions ...
from local to regional and continental scales. ...
Lidar data
Airborne lidar Discrete return lidar data were acquired in early March 2004 from an average altitude of 1000 m above ground level (AGL). ...
doi:10.1016/j.rse.2011.01.026
fatcat:dabzd4jlqndupgkbzjzrhsbike
Performance evaluation of GEDI and ICESat-2 laser altimeter data for terrain and canopy height retrievals
2021
Remote Sensing of Environment
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(version 4) using high-resolution, locally calibrated airborne lidar products acquired in the same year (2019) as the reference datasets. ...
When ICESat-2 and GEDI data are used for canopy height retrieval, the use of only strong/power beam data acquired at night is recommended, as the overall RMSEs decrease from 7.21 and 5.02 m to 3.93 and ...
The authors want to acknowledge the NASA for providing ICESat-2 and GEDI data, NEON for providing airborne lidar data, NOAA for providing VDatum software. ...
doi:10.1016/j.rse.2021.112571
fatcat:ucp3cdd6fbbordxeo7ixfuhw4m
Light detection and ranging and hyperspectral data for estimation of forest biomass: a review
2014
Journal of Applied Remote Sensing
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From local to global scales, remote sensing has been extensively used for forest biomass estimation. ...
A review on the status of hyperspectral data, LiDAR data, and the fusion of these two data sources for forest biomass estimation in the last decade is provided. ...
The first author would like to thank the China Scholarship Council for the support of two years' study in the Department of Geography, University of North Texas. ...
doi:10.1117/1.jrs.8.081598
fatcat:hdvyjfwl3jbrflvrk5lko2xj4u
Forest Canopy LAI and Vertical FAVD Profile Inversion from Airborne Full-Waveform LiDAR Data Based on a Radiative Transfer Model
2015
Remote Sensing
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This paper proposes a physically based method to retrieve LAI and foliage area volume density (FAVD) profile directly from full-waveform Light Detection And Ranging (LiDAR) data using a radiative transfer ...
Finally, LAI of the study area was retrieved from the inverted FAVD at a 10-m resolution. CHM derived LAI based on the Beer-Lambert law was compared with the LAI derived from full-waveform data. ...
863 Program (2013AA12A303, 2012AA12A301), and the Fundamental Research Funds for the Central Universities. ...
doi:10.3390/rs70201897
fatcat:kvvnuney6rgspetbndpu5rvjxe
Assessing modern ground survey methods and airborne laser scanning for digital terrain modelling: A case study from the Lake District, England
2013
Computers & Geosciences
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20 21 22 23 24 25 42 normal distribution defined using median and normalized median absolute deviation which supports the 43 use of the robust measures in DEM error modelling and its propagation. 44 45 ...
T., 2010. 503 Terrestrial laser scanning intensity data applied to damage detection for historical buildings. ...
Vertical accuracy of digital terrain models (DTMs) derived from GPS, TLS and airborne laser 28 scanning (ALS) data is assessed. ...
doi:10.1016/j.cageo.2012.08.015
fatcat:pe6canqlsnfslebzohsgz4efyy
A Full-Waveform Airborne Laser Scanning Metric Extraction Tool for Forest Structure Modelling. Do Scan Angle and Radiometric Correction Matter?
2020
Remote Sensing
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Compared to traditional discrete airborne laser scanning (ALSD), it is capable of registering the complete signal going through the different vertical layers of the vegetation, allowing for a better characterization ...
In the last decade, full-waveform airborne laser scanning (ALSFW) has proven to be a promising tool for forestry applications. ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/rs12020292
fatcat:wbkw2esxibhcnkl54rjxvg5yhe
Using Satellite and Airborne LiDAR to Model Woodpecker Habitat Occupancy at the Landscape Scale
2013
PLoS ONE
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Our objective was to explore the utility of satellite-based LiDAR data from the Geoscience Laser Altimeter System (GLAS) relative to airborne-based LiDAR to model the north Idaho breeding distribution ...
The large area of each GLAS ellipse and the non-contiguous nature of GLAS data may pose significant challenges for wildlife distribution modeling; nevertheless these data can provide useful information ...
We thank two anonymous reviewers for their constructive comments on eariler versions of the manuscript. ...
doi:10.1371/journal.pone.0080988
pmid:24324655
pmcid:PMC3855685
fatcat:el77d4e7vrfvvf3x5bv4ssbcjm
Land-ice elevation changes from photon-counting swath altimetry: first applications over the Antarctic ice sheet
2015
Journal of Glaciology
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Using the ALAMO (Airborne Laser Altimeter with Mapping Optics) system of a scanning photon-counting lidar combined with a laser altimeter, we extend the 2003–09 surface elevation record of NASA's ICESat ...
satellite, by determining cross-track slope and thus independently correcting for ICESat's cross-track pointing errors. ...
ACKNOWLEDGEMENTS Funding for the fieldwork and data reduction was provided by NASA grants NNX09AR52G, NNG10HP06C and NNX11AD33G, Program DACOTA (06-VULN-016) of the Agence Nationale pour la Recherche, ...
doi:10.3189/2015jog14j048
fatcat:5jxfqrgbjzaadicu44bvq652vi
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