搜索结果: 1-15 共查到“理学 ETM”相关记录17条 . 查询时间(0.078 秒)
Evaluation of the Wetland Mapping Methods using Landsat ETM+ and SRTM Data
wetlands remote sensing mapping delineation automated methods semi-automated methods Limpopo river basin
2015/8/13
Overarching goal of this paper was to evaluate automated and semi-automated methods of mapping wetlands using Landsat ETM+ and SRTM data. Automated methods consisted of: (a) slope derived from SRTM, (...
ANALYSIS OF THE SHORELINE POSITION EXTRACTED FROM LANDSAT TM AND ETM+ IMAGERY
Shoreline position Landsat imagery
2015/5/7
A statistical analysis of the results obtained by the tool SELI (Shoreline Extraction from Landsat Imagery) is made in order to characterise the medium and long term period changes occurring on beac...
A comparison of Landsat 8 (OLI) and Landsat 7 (ETM+) in mapping geology and visualising lineaments: A case study of central region Kenya
Band rationing False colour Combinations (FCC) Principal Component Analysis
2015/5/7
Availability of multispectral remote sensing data cheaply and its higher spectral resolution compared to remote sensing data with higher spatial resolution has proved valuable for geological mapping...
Evaluation of the Wetland Mapping Methods using Landsat ETM+ and SRTM Data
wetlands remote sensing mapping, delineation
2015/1/7
Overarching goal of this paper was to evaluate automated and semi-automated methods of
mapping wetlands using Landsat ETM+ and SRTM data.
Automated methods consisted of: (a) slope derived from SRTM,...
Digital image processing and geospatial analysis of landsat 7 ETM+ for mineral exploration, Abidiya area, North Sudan
Landsat 7 Spectral enhancement image transformation FPCS alteration zone
2014/11/25
Digital data of Landsat Enhanced Thematic Mapper Plus (ETM+
7) was used in mineral
exploration investigations for the area around Abidiya area, North Sudan. The studied area
consists of Precambri...
Landsat-7 ETM+与ASTER建筑指数的定量比较
Landsat ETM+ ASTER NDBI IBI 交互比较 光谱响应函数
2014/3/17
城市化进程导致的城市建筑用地急剧扩张已对全球的环境资源产生了负面影响,因此亟需对其进行监测。在中尺度卫星对地观测系统中,Landsat 和ASTER数据最适合于监测城市建筑用地变化。但是迄今为止,这两种传感器数据的建筑指数之间的关系并不清楚。因此,利用三对同日过空的ETM+和ASTER影像来查明二者建筑指数(IBI、NDBI)之间的定量关系,通过回归统计分析来求出两种传感器建筑指数之间的转换方程。...
含矿热液蚀变带是成矿作用发生的重要标志之一，它作为矿产资源快速评价和定位预测的一个主要参数，在遥感地质找矿中具有重要意义。本文在分析干旱区ETM遥感影像地物识别所依据的光谱特征的基础上，提出一种基于小波自适应增强及主分量分析相结合的蚀变遥感异常信息提取方法，结合MATLAB编程软件和ERDAS 8.6遥感图像处理软件进行蚀变信息提取试验，并分别与传统的基于波段选择的主成分提取法以及基于主成分分析和...
MERIS, MODIS and ETM+ Channel Configurations in the Estimation of Lake Water Quality from Subsurface Reflectance Using Semi-analytical and Empirical Algorithms
reflectance water quality inversion channel ratios lakes remote sensing
2009/6/9
We studied the estimation of lake water quality from measured subsurface reflectances in order to find out the potential of the channel configurations of three satellite instruments (MERIS, MODIS and ...
ETM图像地物反射率光谱反演
ETM图像 反射率光谱反演 真彩色合成
2009/5/11
用搭载在卫星Landsat-7上的多光谱成像仪ETM记录的来自地气系统的辐亮度光谱图像，反演地物反射率光谱，在ETM 1波段，反射率反演的不确定度基本上保证在17%以内，2，3波段在10%以内，优于目前常用的简易算法。用反演的地物辐亮度光谱合成的sRGB真彩色图像，清晰度欠佳，未作经验调整时明显偏色，用于航天对地真彩色摄影这一反演精度还不够，但用于目视判读明显优于原图像。
文中讨论了新的找矿参数——蚀变遥感异常的地质基础和光谱前提，在矿床地质学和蚀变矿物光谱参数特征的基础上，编制了一张用于遥感异常提取及对其地质解释的表格。ETM遥感异常提取技术已在全国推广，ASTER数据可以在三个方面对已推广的ETM起到重要的补充作用：1.利用短波红外增设的波段，对某些矿致异常区分其矿化（矿床）类型；2.利用增设的热红外波段区分某些岩性；3.可有助于解决ETM因第7波段太宽而产生的...
ETM+影像湿地遥感信息提取的最佳波段选择
湿地 最佳波段 OIF 波段用途
2008/6/11
本文针对湿地遥感信息的特点，根据最佳指数法的理论依据，由相关系数矩阵，将ETM+各波段进行分组，再结合各波段的主要用途，使波段的所有组合方式由84 种减少为6 种，大大减少了计算最佳指数的运算量。最后根据实验，选取波段453 组合方式作为假彩色合成影像的RGB 波段。
Land cover changes in the rural-urban interaction of Xi´an region using Landsat TM/ETM data
2007/8/24
Landsat ETM/TM data and an artificial neural network (ANN) were applied to analyse the expansion of the city of Xi´an and land use/cover change of its surrounding area between 2000 an...
Spatial-temporal changes of tidal flats in the Huanghe River Delta using Landsat TM/ETM+ images
2007/8/24
Integrating remote sensing, geographic information system (GIS) and fractal theory, change characteristics of tidal flats and tidal creeks in the Huanghe (Yellow) River Delta over the peri...
应用Landsat ETM数据估算鄱阳湖湿生植被生物量
生物量
2007/8/24
摘要:利用2000年的Landsat ETM数据，首次采用全数字化遥感定量方法对鄱阳湖湿生植被的生物量及其分布进行调查研究。首先，用该时相卫星数据制作假彩色合成图象，以该图象为主要依据之一，设计了野外生物量采样路线与样点，并在地形图和GPS的帮助下，实时地开展了湿生植被生物量的野外实地采样。然后，在室内将采样点坐标和Landsat ETM图象坐标进行几何纠正和匹配，将坐...
Wetland vegetation biomass estimation and mapping from Landsat ETM data:
a case study of Poyang Lake
2007/8/24
Abstract: Poyang Lake is the largest freshwater lake in China. This paper conducted a digital and rapid investigation of the lake?s wetland vegetation biomass using Landsat ETM data acquir...