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Optical and radar data fusion for DEM generation
DEM generation SAR Interferometry Phase Unwrapping SPOT Stereoscopy Data Fusion
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2016/5/20
This paper presents a DEM generation procedure based on optical (SPOT stereo) and radar (InSAR, interferometric SAR) data. The first part of the paper is focused on InSAR. The second one is concerned ...
LIDAR Data Reduction for Efficient and High Quality DEM Generation
LiDAR Laser Scanning DEM Interpolation Catchment Data Reduction
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2015/12/8
Airborne Light Detection and Ranging (LiDAR) - also referred to as Airborne Laser Scanning (ALS), provides means for high density and high accuracy topographic data acquisition. LiDAR data have become...
A Flow to Generate DEM and Segment Buildingin in Urban Areas from LIDAR Data
Lidar Fusion filter Digital elevation model Connected component labelling Mathematical morphology
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2015/12/8
Based on the character of Lidar data，this paper presents a fusion arithmetic to abstract DEM，and presents a flow to get building data from the object data. Firstly, this paper preprocesses the range i...
An Evaluation on the Data Quality of Srtm DEM at the Alpine and Plateau area, North-Western of China
DEM Shuttle Radar Topographic Mission (SRTM) evaluation Inferometric SAR (InSAR) land cover
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2015/11/23
This paper evaluates the quality of SRTM3 data for alpine and plateau areas in Northwestern (NW) China against DEM data extracted from topographic maps. These SRTM data were obtained from both the ESR...
A HADOOP-BASED ALGORITHM OF GENERATING DEM GRID FROM POINT CLOUD DATA
Hadoop LiDAR Digital Elevation Model
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2015/5/7
Airborne LiDAR technology has proven to be the most powerful tools to obtain high-density, high-accuracy and significantly detailed surface information of terrain and surface objects within a short ...
AN INTEGRATED APPROACH TO ACCURATE DEM GENERARTION USING AIRBOREN FULL WAVEFORM LIDAR DATA
Remote Sensing full waveform LiDAR DEM generation Morphology integration
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2014/6/5
In this study, full waveform LiDAR data were exploited to improve the generation of a large-scale digital elevation model (DEM). Building on the methods of progressive generation of triangulation irre...
HIGH-PRECISION DEM PRODUCTION FOR SPACEBORNE STEREO SAR IMAGES BASED ON SIFT MATCHING AND REGION-BASED LEAST SQUARES MATCHING
Matching Stereo DEM Radargrammetric Applycation strategy
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2014/4/25
Generally, there are two ways to generate Digital Elevation Model (DEM) using synthetic aperture radar (SAR) data, which are Interferometer Synthetic Aperture Radar(InSAR) and radargrammetry. Consider...
一种改进的基于DEM的机载重轨干涉SAR运动补偿算法
干涉SAR 机载重轨干涉测量 运动补偿
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2009/8/28
该文研究了基于DEM(Digital Elevation Model)的高精度重轨干涉SAR运动补偿算法。分析了平地假设及波束中心近似造成的残余运动误差的影响，表明对重轨干涉SAR系统进行基于DEM的高精度运动补偿的必要性。分析了对外部DEM数据精度要求，指出利用低精度DEM数据进行精确运动补偿获取高精度DEM数据的可行性。针对现有基于DEM运动补偿算法的不足提出改进算法。该算法根据载机轨迹偏移和...
星载SAR干涉技术获取DEM及其精度分析
合成孔径雷达干涉测量 数字高程模型 精度分析
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2009/7/9
星载合成孔径雷达干涉（InSAR）技术是一种数据覆盖范围广、廉价、高效、方便的数字高程模型（DEM）获取方法，但在地面植被覆盖广、大气水汽含量高的地区其影像相干性随时间基线的增加迅速降低；同时，SAR卫星的轨道误差也影响DEM精度。利用ERS-1/2卫星串行模式SAR数据获取镇江地区DEM，分析了轨道误差对DEM精度的影响；根据干涉相位的统计特性，从理论上给出干涉相位噪声与相干系数和视数之间的关系...