搜索结果: 1-15 共查到“知识库 动力大地测量学”相关记录15条 . 查询时间(6.675 秒)
DISASTER PREVENTION COASTAL MAP PRODUCTION BY MMS&C3D
Coastal Mapping Tsunami MMS Interferometry echo sounder continuous topography
2016/7/5
In March 2011, Eastern Japan suffered serious damage of Tsunami caused by a massive earthquake. In 2012, Ministry of Land, Infrastructure and Transport published “Guideline of setting assumed areas of...
A ROBUST REGISTRATION ALGORITHM FOR POINT CLOUDS FROM UAV IMAGES FOR CHANGE DETECTION
andslide dynamics normal distance bundle block adjustment with self-calibration structure from motion 3D dense surface reconstruction Unmanned Aerial Vehicle (UAV)
2016/7/5
Landslides are among the major threats to urban landscape and manmade infrastructure. They often cause economic losses, property damages, and loss of lives. Temporal monitoring data of landslides from...
PRECURSORY SLOPE DEFORMATION AROUND LANDSLIDE AREA DETECTED BY INSAR THROUGHOUT JAPAN
InSAR landslide precursory slope deformation field survey
2016/7/5
Interferometric Synthetic Aperture Radar (InSAR) technique is able to detect a slope deformation around landslide (e.g., Singhroy et al., 2004; Une et al., 2008; Riedel and Walther, 2008; Sato et al.,...
ANALYSING POST-SEISMIC DEFORMATION OF IZMIT EARTHQUAKE WITH INSAR,GNSS AND COULOMB STRESS MODELLING
InSAR GNSS Coulomb stress changes North Anatolian Fault (NAF) Izmit earthquake deformation co-seismic
2016/7/4
On August 17th 1999, a Mw 7.4 earthquake struck the city of Izmit in the north-west of Turkey. This event was one of the most devastating earthquakes of the twentieth century. The epicentre of the Izm...
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 ...
EXPLORATORY RESEARCH ON DYNAMIC VISUALIZATION BASED ON SPATIO-TEMPORAL DATABASE
Dynamic Visualization Dynamic Symbol Dynamic Map Spatio-temporal Database
2015/8/10
Visualization plays an important role in the representation of geographic data in GIS. The addition of temporal variable challenged the implementation of it. In the paper, the authors put forward the ...
为提高某军用越野车辆在软路面的机动性,提出一种基于滚动阻力实时监测的软路面识别方法。利用软路面测量的特征参数计算出土壤"圆锥指数"(cone index,CI);依据贝克的地面力学"压力-沉陷"公式获得主要由土壤压实阻力构成的车轮滚动阻力系数;通过实时监测车辆和发动机动的运行状态,基于车辆纵向力平衡方程,根据发动机的输出扭矩计算车辆当前行使路面的滚动阻力系数,并与软路面滚动阻力系数临界阈值进行对比...
基于优化包络相关法的罗兰C天波延迟估计算法
罗兰C 天波延迟 包络相关 相关系数
2012/12/25
针对低信噪比条件下,罗兰C天波信号延迟时间估计的准确性和有效性问题,提出了基于优化包络的相关系数时域法。首先,分析了标准罗兰C信号包络的特征,并分别采用微分和二次微分方法对罗兰C信号包络进行优化,形成陡峭的包络信号上升沿。然后,利用相关系数法对接收信号包络和参考信号包络进行匹配,形成的匹配峰值分别对应地波和天波信号到达的时刻,由此可获得天波信号的延迟时间。最后,通过仿真分析和实测信号试验验证,证明...
TERRASAR-X AND RAPIDEYE DATA FOR THE PARAMETERISATION OF RELATIONAL CHARACTERISTICS OF URBAN ATKIS DLM OBJECTS
Urban land use object-based image analysis RapidEye
2014/6/5
This work presents a multi-sensor data analysis concept for the parameterisation of urban landuse in comparison to ATKIS DLM
reference objects (digital landscape model). An object based top-down app...
Integrating model knowledge into SVM classification – Fusing hyperspectral and laserscanning data by kernel composition
hyperspectral airborne laserscanning data fusion support vector machine
2014/6/5
Roof materials are important sources of pollutants within cities.
To monitor and quantify polluted roof runoff, a precise classification approach of various roof material classes is needed. Wit...
Periodic geocenter motion measured with SLR in 1993-2006(由SLR观测的地心周期性运动1993-2006)
激光测卫(SLR) 地心运动 地球质量再分布 LAGEOS 1/2
2009/11/18
地球质心(CM)是整个地球的质量中心,地心运动是由地球系统的质量重新分布激励的,特别是流体圈层。利用SLR对LAGEOS 1/2卫星的距离观测,解算了1993-2006期间的地心运动时间序列。然后分布利用小波变化和最小二乘法分析了该序列,发现地心运动存在长期和周期性变化。地心的长期运动表明地壳形状在变化,北半球和180o半球在收缩,南半球和0o半球在膨胀。季节性变化是地心运动的主项,主要是由地球流...
基于GPS观测数据的汶川地震断层形变反演分析
同震变形 断层滑动 汶川 GPS
2009/11/18
2008年5月12日汶川地震(Mw8.0)造成了巨大的人员伤亡和经济损失,国家测绘局和地震局等系统通过GPS观测手段迅速获取了大量的地表观测数据。本文通过高精度数据处理方法获取了可靠的同震形变位移,较大形变主要在汶川、青川和北川县,其中最大同震形变不在震源处,而在北川县,水平方向达到2.3m,垂向为0.68m。并进一步采用均匀分层滑动模型,利用弹性半空间均匀位错理论反演得到同震断层滑动分布。研究结...
2008年5月12日,青藏高原东缘龙门山断裂带发生Mw 7.9级汶川地震,该地震使得北川-映秀断裂、灌县-江油断裂和汉旺-白鹿断裂带发生了同震破裂。本文主要利用“中国地壳运动观测网络”项目组提供的GPS同震位移资料,采用基于敏感度迭代拟合法(SBIF)及分段发震断层模型,分别应用均匀半空间和分层地壳结构两种方法反演分析了该次地震的精细同震滑动分布。结果表明:(1)SBIF反演方法应用于相对较小的G...
南极冰貌环境变迁与海平面变化和南极动力大地测量研究
南极冰貌环境变迁 海平面变化 大地测量
2009/6/23
1、建立了中国首次南极内陆冰盖考察中具有中国特色的测绘保障体系;2、完成了两年GPS跟踪观测和一年的海洋潮汐数据采集,使我国成为全南极拥有7个常年跟踪站国家之一,为我国今后长期参与国际南极地壳运动和南极海平面变化以及物质平衡等动态项目研究打下了良好的基础;3、遥感技术在南极冰雪环境特征及其动态过程应用研究;4、建成了中国南极互联网地理信息库。
人卫激光测距系统的观测与研究(图)
人卫激光测距系统 观测
2009/4/21
国家基础测绘项目,执行时间2006年1月至2006年12月,开展本项目的目的是基于中国测绘科学研究院房山人卫观测站现有的激光测距系统对全球在轨激光测距卫星进行持续跟踪观测,为国际激光测距服务组织和中国地壳运动观测网络以及地球物理国家野外科学观测台网提供卫星激光测距观测数据,并基于卫星激光测距观测数据开展地球动力学相关研究和应用工作。