搜索结果: 1-15 共查到“测绘科学技术 sampling”相关记录17条 . 查询时间(0.414 秒)
Assessing thematic map using sampling technique
Assessing thematic map sampling technique
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2016/5/20
The estimation of accuracy of thematic maps derived from remotely sensed data used in conjunction with a geographic information system is presented. A systematic random sampling techique is proposed t...
GEOCHEMICAL SAMPLING SCHEME OPTIMIZATION ON MINE WASTES BASED ON HYPERSPECTRAL DATA
Hazards Hyperspectral Sampling Pollution GIS
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2016/1/3
Spatial sampling optimization is an important issue for both geo-chemists and geo-statisticians. Many spatial sampling optimization methods have been previously developed. In this paper, we present a ...
SAMPLING METHODS USING REMOTE SENSING AND GLOBAL POSITIONING SYSTEM FOR CROP ACREAGE ESTIMATION AT-NATIONAL SCALE IN CHINA
Sampling Sampling unit Stratified sampling RS GPS Agricultural condition Acreage
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2016/1/3
Sampling methods have to be applied in agricultural condition monitoring at national scale. When selecting sampling methods, more attention needs to be paid not only to objects monitored, but also to ...
OPTIMIZED DESIGNS OF FRAMEWORKS AND ELEMENTS IN SPATIAL SAMPLING FOR CROP AREA ESTIMATION
Sampling Techniques Sampling Frame Sampling Efficiency Sample-Square Dimension Sample Size
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2015/12/28
The experiments were conducted for monitoring crop area by spatial sampling methods in a winter wheat main production region with a size of 42Km×42Km in Hengshui City, Hebei Province in China to optim...
The Quality Assessment and Sampling Model for the Geological Spatial Data in China
Sampling Quality assessment Geological data Geographic information ISO standards
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2015/12/3
The sampling inspection model proposed by this paper is the key for the quality inspection and assessment of geological data, which is based on the present standards, research findings, and the qualit...
SIMULATING SAMPLING EFFICIENCY IN AIRBORNE LASER SCANNING BASED FOREST INVENTORY
Airborne laser scanner Simulator Forest inventory
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2015/11/10
A simple simulator was developed to test whether airborne laser scanning can be used as a strip sampling tool for forest inventory purposes. The simulator is based on the existing two stages,grid base...
STATISTICAL PROPERTIES OF MEAN STAND BIOMASS ESTIMATORS IN A LIDARBASED DOUBLE SAMPLING FOREST SURVEY DESIGN
Forestry statistics LIDAR sampling inventory biomass
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2015/11/10
Airborne laser scanning (lidar) can be a valuable tool in double-sampling forest survey designs. Lidar-derived forest structure metrics are often highly correlated with important forest inventory vari...
A PRELIMINARY STUDY ON SPATIAL SAMPLING FOR TOPOGRAPHIC DATA
Gaussian Filter Spatial Sampling Error Surface Topographic Data
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2015/9/28
In this paper, an effective spatial sampling method is preliminary explored to assess the quality of the topographic data. The most novel idea in this study is we think the error as noise in the signa...
CROP AREA ESTIMATION USING REMOTE SENSING ON TWO-STAGE STRATIFIED SAMPLING
crop acreage remote sensing stratified sampling
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2015/7/29
In this paper, we analyses problems that remote sensing technique met in China. And provide a new methodology on stratified
sampling technique. During the stratification procedure, physical factors,...
Study of Sampling Methods for Accuracy Assessment of Classified Remotely Sensed Data
Remote Sensing Land cover Classification
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2015/7/9
Accuracy assessment is an important step in the process of analyzing remote sensing data. It determines the value of the resulting
data to a particular user, i.e. the information value. Remote sensin...
SAMPLING OF BIDIRECTIONAL REFLECTANCE FROM MULTIANGULAR HIGH RESOLUTION AIRBORNE IMAGERY
Acquisition Sampling DEM/DTM Aerial High resolution Multispectral
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2015/5/29
The present investigation describes a method for sampling bidirectional reflectance information from multiangular airborne images.The method uses high resolution surface models in the determination of...
Landscape Indices Based Two-Rank Sampling for Land Cover Validation
Validation Globalland 30 Sampling Landscape heterogeneity Landscape indices Web-based
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2014/7/23
A web-based validation is necessary for assessing the accuracy of Globalland30. As one of the obstacles in validation of global land cover data, it is a challenge to effectively select a reasonable sa...
APPLICATION OF SPATIAL MODELLING APPROACHES, SAMPLING STRATEGIES AND 3S TECHNOLOGY WITHIN AN ECOLGOCIAL FRAMWORK
Modelling Statistics Experimental Technology Ecology Forestry
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2014/4/30
How to effectively describe ecological patterns in nature over broader spatial scales and build a modeling ecological framework has become an important issue in ecological research. We test four model...
OPTIMIZATION OF DECISION-MAKING FOR SPATIAL SAMPLING IN THE NORTH CHINA PLAIN, BASED ON REMOTE-SENSING A PRIORI KNOWLEDGE
Agricultural Spatial Sampling Remote Sensing a Priori Knowledge Spatial Structure Characteristics RIP(s)/RIV(s) Sampling efficiency
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2014/4/29
In this paper, the MODIS remote sensing data, featured with low-cost, high-timely and moderate/low spatial resolutions, in the North China Plain (NCP) as a study region were firstly used to carry out ...
PROCESSING A COMPLEX ARCHITECTURAL SAMPLING WITH MESHLAB: THE CASE OF PIAZZA DELLA SIGNORIA
TOF scanning Data Processing Open Source MeshLab
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2014/6/5
The paper presents a recent 3D scanning project performed with long range scanning technology showing how a complex sampled dataset can be processed with the features available in MeshLab, an open sou...