搜索结果: 151-165 共查到“知识库 大地测量学”相关记录1042条 . 查询时间(4.077 秒)
A NOVEL IMAGE FUSION METHOD FOR MULTI-SPECTRAL AND HIGH-RESOLUTION PANCHROMATIC IMAGES
Image Fusion Multi-Source Images Spectral Distortion Spectral Preservation Spatial Resolution SAO
<
2016/3/17
How to greatly benefit form a variety of remote sensing data has become a bottle-neck problem in application of remote sensing. As an image has high spectral resolution, but relatively lower spatial r...
A STUDY OF FEATURE POINTS EXTRACTION BASED ON POINT CLOUD DATA SETS AND MODEL SIMPLIFICATION IN GOAF
Feature Points Extraction 3D laser scanner Point Cloud Data Sets Model Simplification Goaf
<
2016/3/17
The shape measurement of goaf is an important job in mine project. With the rapid development of the measuring equipment, 3D laser scanner, which makes the efficiency of traditional work being improve...
FORMULATION OF GEO-SPATIAL SOLUTION FOR DISASTER MANAGEMENT
emergency disaster flood disaster management disaster errors information system decision process geospatial data mobile and web based geo-spatial data model geo-spatial maps quick information portal
<
2016/3/17
Mumbai city has become extremely vulnerable due to a large population living in huts especially in low-lying areas. Whenever city receives heavy rains; roads get waterlogged and the traffic is disrupt...
VALUE OF IFSAR GEOSPATIAL PRODUCTS AND SERVICES FOR EMERGENCY MANAGEMENT
Emergency management IFSAR geospatial data risk assessment flood modeling
<
2016/3/17
Natural disasters are an unstoppable phenomenon; however, a comprehensive understanding of potential disasters, prompt mitigation planning, and efficient emergency management can significantly reduce ...
ALOS PALSAR OBSERVATION OF KILAUEA VOLCANO ACTIVITIES FROM 2006 TO 2009
DInSAR Ground Deformation Disaster Mitigation Kilauea Volcano Volcano Modelling
<
2016/3/17
Volcanic eruptions are one of the most serious of nature’s calamities, threatening both human lives and property in its immediate vicinity. The dangerous environment surrounding a volcano also causes ...
STRAIGHT ROADS EXTRACTION BY FUSION OF SPOKE WHEEL AND REGION GROWING
Semi-automatic road extraction spoke wheel region growing
<
2016/3/17
Semi-automatic methods are regarded as more practical than automatic methods to obtain and/or update the vector road data. But road tracking methods lose their efficiencies when they are applied to tr...
MODELLING OF REALISTIC THREE DIMENSIONAL DAM COLLAPSE AND LANDSLIDE EVENTS
Smoothed Particle Hydrodynamics Discrete Element Method Dam Collapse Landslides Extreme Flow Events
<
2016/3/17
Computational modelling of extreme particle and fluid flow events can provide increased understanding of their post-initiation course. For the prediction of fluid events such as dam breaks we use the ...
E-ASSESSMENTS AND E-EXAMS FOR GEOMATICS STUDIES
eAssessment eExams ePractice First-Year Problems
<
2016/1/29
We report about our project to introduce web-based automated assessments for engineering studies at the HafenCity University in Hamburg. The assessments are used for free practice and for eExams in th...
DERIVING LAND USE AND CANOPY COVER FACTOR FROM REMOTE SENSING AND FIELD DATA IN INACCESSIBLE MOUNTAINOUS TERRAIN FOR USE IN SOIL EROSION MODELLING
Illumination variations correction of topography induced constrains Canopy cover factor estimation NDVI
<
2016/1/3
Soil erosion is one of the severe land degradation problems in many parts of the world. It not only affects on decreasing agricultural productivity but also it causes disasters such as siltation of re...
IMPROVEMENT OF AEROSOL RETRIEVAL THROUGH CLOUD IDENTIFICATION
CALIPSO CloudSat aerosol cloud lidar radar aerosol optical depth
<
2016/1/3
The stable aerosol retrieval algorithm needs a prior assumption of lidar ratio (the extinction-to-backscatter ratio), and the known aerosol type that is the prerequisite of the assumption, so how to i...
BUILDING A CONSISTENT GEOMETRIC FRAME OVER SPARSE ISLANDS USING SPOT 5 DATA
Mapping DEM orthoimage Reference3D SPOT geometric accuracy
<
2016/1/3
Operating in panchromatic mode onboard SPOT 5, the HRS instrument has two telescopes, one pointing forward and one aft of the satellite. HRS is thus able to cover an area of 600 km x 120 km in a singl...
ACCURACY EVALUATION OF RATIONAL POLYNOMIAL COEFFICIENTS SOLUTION FOR QUICKBIRD IMAGERY BASED ON AUXILIARY GROUND CONTROL POINTS
Rational polynomial coefficients Batch iterative least-squares solution with regularization Incremental discrete Kalman filtering Geo-positioning accuracy
<
2015/12/31
Relative to the rigorous physical model, rational polynomial coefficient (RPC) has been adopted as an alternative common sensor model data for image Geometric correction exploitation. In this paper, b...
A FAST METHOD OF SMOOTHING VECTOR GRAPH CONVERTED FROM RASTER IMAGE
Smooth Vector Method
<
2015/12/31
Vectorization of raster data is very important in GIS. Adjacent vertices of vector graphics usually pass though the same vertical or horizontal straight lines after vectorization. This paper proposes ...
传统的高阶BOC信号多径抑制算法的有效收敛区间较小，不利于信号的稳定跟踪，因此提出一种多区域鉴别器的高阶BOC多径抑制算法。在伪码误差为零的附近区域，采用优化的QStrobe多径抑制鉴别器，而在其他区域采用收敛区间较大的正交BOC鉴别器。利用卡尔曼滤波器对跟踪误差进行开环估计，判断误差所处区域并进行鉴别器的实时切换。对BOC(15, 2.5)和BOC(14, 2)信号的仿真结果表明，该算法能够实现...
CLASSIFICATION OF MODIS SPECTRAL AND ANGULAR SIGNATURES USING DECISION TREE ALGORITHM
MODIS BRDF Land Cover Classification BRDF shape indicator BRDF parameters
<
2015/12/31
It is important to explore the ability of Bidirectional Reflectance Distribution Function (BRDF) to improve classification accuracy using MODerate Resolution Imaging Spectroradiometer (MODIS) BRDF and...