搜索结果: 1-9 共查到“测绘科学技术 GLAS”相关记录9条 . 查询时间(0.046 秒)
VERTICAL ACCURACY ASSESSMENT OF ZY-3 DIGITAL SURFACE MODEL USING ICESAT/GLAS LASER ALTIMETER DATA
Accuracy assessment ZY-3 stereo images DSM ICESat/GLAS
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2017/7/12
The Ziyuan-3 (ZY-3) satellite, as the first civilian high resolution surveying and mapping satellite in China, has a very important role in national 1 : 50,000 stereo mapping project. High...
ESTIMATION OF REGIONAL FOREST ABOVEGROUND BIOMASS COMBINING ICESAT-GLAS WAVEFORMS AND HJ-1A/HSI HYPERSPECTRAL IMAGERIES
LiDAR ICESat-GLAS Waveform HJ-1A/HSI Hyperspectral imagery Forest aboveground biomass Support vector machines
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2016/11/24
Estimation of forest aboveground biomass (AGB) is a critical challenge for understanding the global carbon cycle because it dominates the dynamics of the terrestrial carbon cycle. Light Detection and ...
IMPROVE THE ZY-3 HEIGHT ACCURACY USING ICESAT/GLAS LASER ALTIMETER DATA
ZY-3 ICESat GLAS Satellite Laser Altimetry Satellite LiDAR
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2016/7/4
ZY-3 is the first civilian high resolution stereo mapping satellite, which has been launched on 9th, Jan, 2012. The aim of ZY-3 satellite is to obtain high resolution stereo images and support the 1:5...
TEMPERATE FOREST HEIGHT ESTIMATION PERFORMANCE USING ICESAT GLAS DATA FROM DIFFERENT OBSERVATION PERIODS
Temperate Forest Height Large Footprint Lidar waveform ICEsat GLAS Observation Period
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2015/12/31
To investigate the forest height estimation potential and performance of different observation periods GLAS data in temperate region, this study uses the Northeast of China as test site. USFS FIA styl...
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...
PREDICTING TREE HEIGHT AND BIOMASS FROM GLAS DATA
GLAS lidar forest structure
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2015/9/8
Our previous studies using airborne lidar data have shown that the tree height indices derived from the GLAS and
LVIS waveforms were highly correlated. The quartile waveform energy heights derived fr...
利用GLAS激光测高仪计算格陵兰冰盖高程变化
激光遥感 激光测高 格陵兰冰盖 高程变化
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2016/8/16
星载激光测高系统亚毫弧量级的发散角和冰层表面几乎没有穿透效应的优势使其非常适于监测南北极冰盖变化。利用GLAS激光测高卫星的高程数据,通过交叉和重复点方法分析2003~2009年3月格陵兰2 000 m以上区域冰盖高程变化,并改进了交叉点计算方法,使其适合纬度跨度较大的格陵兰地区。经过粗差剔除和时序解算,研究结果表明,该区域7年间冰盖高程年均变化+3.80 cm/年,中误差0.91 cm,呈缓慢增...
EVALUATION OF GEOSCIENCE LASER ALTIMETER SYSTEM (GLAS) WAVEFORMS FOR VEGETATED LANDSCAPES USING AIRBORNE LASER ALTIMETER SCANNING DATA
LIDAR laser altimetry laser waveform analysis waveform simulations topography vegetation
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2015/3/10
The Geoscience Laser Altimeter System aboard NASA’s Ice, Cloud and land Elevation Satellite will record the height distribution of laser energy reflected from surfaces within 70 m diameter footprints....
基于ASTER立体数据和ICESat/GLAS测高数据融合高精度提取南极地区地形信息
DEM 南极中山站 Dome A ASTER] ICESat GLAS
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2009/5/21
为了更好地保证从中山站到Dome A的南极内陆冰盖考察, 该考察路线沿线的地形信息是必需的. 虽然Radarsat南极制图计划(RAMP)能提供迄今为止最高精度的全南极数字高程模型(DEM), 其最高水平分辨率为200 m, 但其真正的水平分辨率根据源数据的比例尺和区域覆盖密度不同而不同. 对于冰架和内陆冰盖地区, 水平精度约为5 km. 在东南极内陆冰盖地区和远离山脉地区该DEM的垂直精度估计...