搜索结果: 1-15 共查到“测绘科学技术 Waveform”相关记录29条 . 查询时间(0.048 秒)
VOXEL BASED REPRESENTATION OF FULL-WAVEFORM AIRBORNE LASER SCANNER DATA FOR FORESTRY APPLICATIONS
Full-waveform airborne laser scanning Voxel space Ray tracing Forest Filtering
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2016/11/30
The advantages of using airborne full-waveform laser scanner data in forest applications, e.g. for the description of the vertical vegetation structure or accurate biomass estimation, have been emphas...
ANALYSIS OF THE SIDE-LAP EFFECT ON FULL-WAVEFORM LIDAR DATA ACQUISITION FOR THE ESTIMATION OF FOREST STRUCTURE VARIABLES
LiDAR full-waveform overlap stripe differences density changes forest structure canopy fuel comparison of paired samples
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2016/11/30
LiDAR full-waveform provides a better description of the physical and forest vertical structure properties than discrete LiDAR since it registers the full wave that interacts with the canopy. In this ...
MULTI-TARGET DETECTION FROM FULL-WAVEFORM AIRBORNE LASER SCANNER USING PHD FILTER
Probability hypothesis density Full-waveform airborne laser scanner Multi-target detection
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2016/11/11
We propose a new technique to detect multiple targets from full-waveform airborne laser scanner. We introduce probability hypothesis density (PHD) filter, a type of Bayesian filtering, by which we can...
LAND COVER CLASSIFICATION FROM FULL-WAVEFORM LIDAR DATA BASED ON SUPPORT VECTOR MACHINES
LiDAR Support Vector Machines (SVM) Full-Waveform Land Cover Classification Waveform decomposition Feature extraction
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2016/7/27
In this study, a land cover classification method based on multi-class Support Vector Machines (SVM) is presented to predict the types of land cover in Miyun area. The obtained backscattered full-wave...
SIMULATION OF FULL-WAVEFORM LASER ALTIMETER ECHOWAVEFORM
Full-waveform Altimeter Simulation Effect factor Different terrains
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2016/7/4
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 glo...
TOWARDS 3D MAPPING OF FORESTS:A COMPARATIVE STUDY WITH FIRST/LAST PULSE AND FULL WAVEFORM LIDAR DATA
LIDAR Analysis Segmentation Forestry Vegetation
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2015/12/29
This paper highlights several approaches to segment and reconstruct trees from LIDAR data and compares the results acquired both from first/last pulse and full waveform data. In a first step, we set u...
A FULLY AUTOMATED PROCEDURE FOR DELINEATION AND CLASSIFICATION OF FOREST AND NON-FOREST VEGETATION BASED ON FULL WAVEFORM LASER SCANNER DATA
Laser scanning (LiDAR) Classification Aerial Survey Feature extraction Environmental monitoring Forestry
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2015/12/28
Detailed geo-referenced information on the distribution and occurrence of forest and non-forest vegetation is essential for many different disciplines e.g. forestry, nature conservation, agriculture, ...
WAVEFORM ANALYSIS TECHNIQUES IN AIRBORNE LASER SCANNING
LIDAR Waveform Analysis Pulse detection Decomposition Deconvolution Point cloud
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2015/11/10
Small-footprint airborne laser scanners with waveform-digitising capabilities are becoming increasingly available. Waveformdigitising is particularly advantageous when the backscattered echo waveform ...
A METHOD OF DIRECTLY ESTIMATING STEMWOOD VOLUME FROM GLAS WAVEFORM PARAMETERS
Lidar Satellite Vegetation Forestry Inventory
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2015/11/10
Methods of estimating stemwood volume from ICESat/ GLAS lidar waveforms are explored for a mixed temperate forest, the Forest of Dean, Gloucestershire, UK. Previous methods have used maximum canopy he...
COMBINED TREE SEGMENTATION AND STEM DETECTION USING FULL WAVEFORM LIDAR DATA
LIDAR Analysis Segmentation Forestry Vegetation
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2015/11/10
The study highlights a new method for the delineation of tree crowns and the detection of stem positions of single trees from dense airborne LIDAR data. At first, we combine a method for surface recon...
WAVEFORM FEATURES FOR TREE IDENTIFICATION
Laser scanning Waveform Tree identification Close-range photogrammetry Trunk detection
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2015/11/10
Interest in full-waveform airborne laser scanning (ALS) data has significantly increased with the release of waveform digitizers by commercial vendors. Despite the recent widespread availability of fu...
ICESAT FULL WAVEFORM ALTIMETRY COMPARED TO AIRBORNE LASER ALTIMETRY OVER THE NETHERLANDS
Full waveform DTM AHN Laser altimetry ICESat
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2015/11/10
Since 2003 the spaceborne laser altimetry system on board of NASA’s Ice, Cloud and land Elevation Satellite (ICESat) has acquired a large world-wide database of full waveform data organized in 15 prod...
PROCESSING FULL-WAVEFORM LIDAR DATA:MODELLING RAW SIGNALS
lidar waveform analysis signal processing modelling generalized Gaussian
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2015/11/10
Unlike airborne multi-echo laser scanner systems, full-waveform systems are able to digitize and record the entire backscattered signal of each laser pulse. It has been demonstrated that decomposing t...
capability of laser scanning systems capturing the waveform
Accuracy Analysis Laser scanning LIDAR Measurement Full-waveform
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2015/9/1
The analysis of data derived by full-waveform laser scanning systems is of great interest. In this study, we estimate the impulse response of a laser scanning system capturing the waveform. Considerin...
PRECISE RANGE ESTIMATION ON KNOWN SURFACES BY ANALYSIS OF FULL-WAVEFORM LASER
Accuracy Analysis Laser scanning LIDAR Measurement Full-waveform
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2015/8/31
Laser range data analysis is of high interest in photogrammetry. Range estimation for complex surface structures can be inaccurate.To overcome this drawback a method using a laser scanner capable of f...