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Mosaicking of Digital Elevation Models derived by SAR interferometry
Mosaicking Digital Elevation Models derived SAR interferometry
2016/5/20
In the framework of the Shuttle Radar Topography Mapper (SRTM) Mission the generation of high-quality Digital Elevation Models (DEMs) with global coverage of the earth's surface is envisaged. In this ...
Data interchange: Helping to survive existing transfer standards
Spatial Data Access Interchange Point Data Vector Data
2016/5/20
Exchange of data between different software/hardware systems has traditionally involved porting data directly from System A to System B. With large numbers of systems, this tradition has created very ...
Land cover classification: Some new techniques, new source data
Environmental variables Global Land Cover AVHRR Satellite Imagery
2016/5/20
Land cover classifications have advanced from using single Landsat Multispectral Scanner scenes to using "full resolution" AVHRR time series. Three current approaches to global land cover study with A...
Development & assessment of the global land one-km base elevation Digital Elevation Model (GLOBE)
Environmental variables Global Database Topography
2016/5/20
The Global Land One-kilometer Base Elevation (GLOBE) digital elevation model is the most thoroughly designed, reviewed, and documented global digital elevation dataset to date. GLOBE was developed by ...
High resolution digital terrain models of shallow lake basins - Towards modelling dynamics of sedimentation for multithematic ecosystems research
High resolution digital terrain models shallow lake basins Towards modelling dynamics sedimentation multithematic ecosystems research
2016/5/20
Research on GIS applications in the real world context has to be strengthened besides developing GIS application software itself. An ecologically important field of applications is the integration of ...
Updating topographic databases with ARC INFO; client fitted creation of change-only information
topographic databases ARC INFO change-only information
2016/5/20
Most of the existing change-only solutions for updating topologically structured, topographic databases only work in ideal conditions. We therefore decided to develop a new procedure that would also b...
Integrated access to the many heterogeneous and distributed sources of Geo data is an important precondition in order to facilitate the investigation of global processes like temporal development of e...
可测重力变化的便携微型装置问世（图）
测重力变化 便携微型装置
2016/4/5
英国《自然》杂志近日公开的一篇工程学论文，描述了一个便携式、低成本的重力仪，可测量地下隧道或地底石油等局部微小引力扰动。这个硅基设备敏感度还足以测量地球的潮汐，可应用于地球科学、工程、石油和天然气勘探和环境监测上。重力仪全称为重力加速度仪，用于测量本地重力加速度中的微小变化。在科学应用上，可以对地壳形变进行观测，例如在火山学中，重力仪能够在火山喷发前衡量火山的岩浆堆积程度；它还可以在工业和商业上得...
国家发改委召开精密重力测量项目可研评估会
国家发改委召开精密重力测量项目 可研评估会
2016/3/14
2016年2月28日，受国家发改委委托，中国国际工程咨询公司在北京召开精密重力测量国家重大科技基础设施项目可行性研究报告评估会。评估专家组由精密重力测量物理和技术、地质测绘、地球物理、建安工程、技术经济和工程管理等方面的12位专家组成，国家自然科学基金委主任杨卫院士任组长。项目主管部门教育部科技司司长王延觉，国家发改委及湖北省、武汉市发改委相关领导，项目法人单位我校校长丁烈云、副校长骆清铭，项目首...
图像定位技术在现实中有广泛的应用，如导航、路径规划、虚拟现实等.对于用户而言，只需拍摄一张图像即可实现定位.本文提出了一种基于射线摄像机模型的图像定位系统，包含基于射线模型的三维重构算法和基于位姿图优化的图像定位方法.提出的三维重构算法利用射线模型的内在几何性质，能够处理全景和鱼眼等广角摄像机模型，降低采集和重构的代价，提升重构的效果.基于位姿图的定位方法融合了图像与点云匹配的信息和图像间相对位姿...
采用低中频架构设计了一种0.18μm CMOS工艺的GPS/BDS双模可重构接收机射频前端，能在GPS L1模式或BDS B1模式下工作。通过频率自适应电路调整中频滤波器的时间常数,降低其频率不确定度；压控振荡器中加入4位开关电容阵列，以提高频率调谐范围和相位噪声性能；通过硬件复用的方式降低系统功耗。测试结果表明，在1.8 V电源电压下，功耗37.8 mW，电压增益为103 dB，GPS L1和B...
Case Study–Use of Video Clips in a Virtual Learning Environment to enhance the learning experience of our students
Video clips student centred learning multi layered teaching enhanced student experience student opinions
2016/1/29
This paper considers how the use of video clips integrated into a virtual learning environment has been perceived by students on a land surveying module within a civil engineering degree. The increasi...
华中科技大学组织预审精密重力测量研究项目可行性研究报告
华中科技大学 精密重力测量研究项目 可行性研究报告
2016/1/13
2016年1月3日，华中科技大学组织召开精密重力测量研究设施国家重大科技基础设施项目可行性研究报告专家预审会。教育部科技司司长王延觉，项目指挥长、华中科技大学校长丁烈云，项目副指挥长、副书记、副校长马小洁，项目首席科学家罗俊院士出席会议。会议由项目常务副指挥长、副校长骆清铭主持。
中国矿业大学副校长姜耀东会见美国辛辛那提大学代表（图）
姜耀东 美国辛辛那提大学
2015/12/30
2015年12月28日，美国辛辛那提大学地理系系主任刘红星教授来我校进行访问，副校长姜耀东亲切会见刘红星，地球科学与测绘工程学院和国际合作与交流处相关负责人参加了会谈。
ESTIMATION OF THE ACCURACY OF THE SRTM TERRAIN MODEL ON THE AREA OF POLAND
SAR Interferometer DEM/DTM Reference Data Statistic Accuracy Analysis
2015/12/30
In order to determine the absolute accuracy of SRMT model on Polish area the research work has been performed on the basis of reference terrain profiles measured by GPS technique. The flat and hilly t...