搜索结果: 1-15 共查到“知识库 理学 RS”相关记录37条 . 查询时间(0.046 秒)
RS:青藏高原典型气候区中尺度湖泊月变化特征(图)
青藏高原 气候区 中尺度湖泊 月变化
2023/1/16
刘立波/杨雨嫣等-RS:电离层空间结构新特征(图)
电离层 空间结构 新特征
2023/1/16
STUDY ON KARST INFORMATION IDENTIFICATION OF QIANDONGNAN PREFECTURE BASED ON RS AND GIS TECHNOLOGY
Karst Landsat-5 TM Image RS+DEM Slope Karst Rocky Desertification
2018/5/16
Karst area is a pure natural resource base, at the same time, due to the special geological environment; there are droughts and floods alternating with frequent karst collapse, rocky desertification a...
DETERMINATION AND CHARACTERISATION OF FAULT SYSTEMS AND GEOMORPHOLOGICAL FEATURES BY RS AND GIS TECHNIQUES IN THE WSW PART OF TURKEY
Remote Sensing Geology Geomorphology Western Anatolia Earthquakes DEM/DTM Applications
2015/7/30
This article is aimed to give the first results of the project studying the faults and tectonic style of the southwestern part of Turkey
based on remote sensing techniques. LANDSAT-TM and ASTER sate...
Monitoring of bank line erosion of River Ganga, Malda District, and West Bengal: Using RS and GIS compiled with statistical techniques
River Migration banks failure paradigm shift mitigation of disasters
2014/11/26
The creation of regional imbalance, inequalities and differentiation in India, starts with the
physiographic element and ends with economic, and socio-cultural parameters of the
inhabitants/popula...
基于频谱预处理的RS码盲检测识别方法
RS码 有限域傅立叶变换 盲检测与识别
2014/4/10
针对RS(Reed Solomon)码的盲检测与识别问题,提出了一种基于频谱预处理的检测方法。该方法利用RS码的频域特征,实现对RS码的盲检测与识别,针对高误码情况,对多组码字的频谱分量进行非线性变换和中值滤波,充分利用码字变换频谱的统计信息,使得检测算法可以适应较高的误码环境,同时给出了算法误码适应能力的理论上限。仿真实验表明,算法能够在较高误码率条件下实现对本原RS码的盲检测与识别,性能已接近...
RS和GIS支持的洪河地区湿地生态健康评价
遥感 地理信息系统 湿地 生态健康评价
2011/7/26
洪泛平原淡水自然湿地对于生态多样性保护具有重要意义。当前自然湿地普遍面临气候变化与人类活动干扰和影响,其生态健康的状况令人担忧,结合新的地学信息技术探索自然湿地生态健康评价分析方法具有重要意义。选择位于三江平原东北部的洪河国家级自然保护区湿地及其周边农场湿地为研究区,依据遥感和地理信息系统技术支持,结合野外生态调查与水文气象监测数据,从水文地貌特征、景观特征和人类扰动3方面选取一系列评价指标因子,...
参数λ是SCS产流模型的一个重要参数,模型研究者将标准值λ=0.2作为模型的参数值。但模型参数没有考虑地貌类型对产流的影响,喀斯特地区不同地貌类型下地表坡度、土层厚度、地层岩性、基岩裂隙的发育程度等方面均存在很大差别,而这些因素都直接影响着流域的产流机制。在考虑地貌类型对喀斯特流域产流影响的基础上,通过率定不同地貌类型下的λ值对SCS模型进行改进。以GIS和RS技术作为获取流域地貌类型、土壤类型和...
基于SMC-RS-LSSVM的电子商务客户流失预测模型
SMC 粗糙集 最小二乘支持向量机
2010/12/29
为提高个体层次上客户流失预测的精度,建立了基于SMC-粗糙集-最小二乘支持向量机的电子商务客户流失预测模型.该模型首先利用SMC模型计算出客户活跃度,以0.5为阈值判断出客户流失状态,识别出正判客户和错判客户;其次应用粗糙集理论约简出重要的客户流失预测指标体系,然后将训练样本送入最小二乘支持向量机进行学习和训练,进而对测试样本的客户流失状态进行判别.利用某网上商场的2525名客户样本进行电子商务客...
借助于Fourier变换,在较弱条件下给出了φ(x)是L2(Rs)上正交尺度函数的一个充分必要条件.进一步, 假设 {Ψμ } 是正交小波, 且正交小波的Fourier变换紧支集是
∪μ supp{ψμ} = ∏si=1[Ai, Di] - ∏si=1(Bi, Ci), Ai ≤ Bi ≤ Ci ≤ Di, i =1, 2, … , s.
则在最弱条件“每一个 |ψμ| 在ω ∈ ...
DEM-RS-GIS BASED STORM RUNOFF HYDROGRAPH ESTIMATION FOR THE HEART RIVER SUB-BASIN, MISSOURI RIVER BASIN
Remote sensing Normalized Difference Vegetation Index geographic information system
2009/10/12
Accurate representation of the physical and biological features of the landscape within the watershed is required as the extent and type of watershed cover affects the movement of water in the hydrolo...
Unravelling the Nature of HD 81032 – A New RS CVn Binary
Star-X-ray star-variable star-late-type star-HD 81032
2009/5/12
BVR photometric and quasi-simultaneous optical spectroscopic
observations of the star HD81032 have been carried out during
the years 2000–2004. A photometric period of 18.802 ± 0.07d has been
dete...
GIS/RS-Based Flood Risk Mapping for the Eastern Honghu Flood Diversion Area
Honghu flood diversion area flood inundation estimation flood risk mapping
2008/12/2
A first case study for the estimation of flood damages in the eastern Honghu flood diversion area is presented in this paper. The results display flood risk zones based on simulated estimation depths....