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以当前海洋信息集成国内外的研究现状和存在的问题为背景;以海洋信息集成、业务整合的迫切需求,以及海洋地理信息系统的发展为驱动;以基于Mashup的信息聚合技术和Web服务技术为支持,提出了海洋信息服务聚合平台的体系框架。研究了面向聚合应用的海洋信息服务模式和基于Mashup的海洋信息服务的聚合方法。最后以海洋信息服务聚合平台为基础,以南海基础地理数据为背景数据.研究了基于聚合平俞的分布式海洋观测数据和海洋模型的集成方法。实验表明基于Mashup的海洋信息服务聚合方法可以轻松、快速地重组来自不同地方的数据服务和模型服务,能够满足海洋研究因情景而不断变化的需求。 相似文献
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基于World Wind Java(WWJava)3D GIS平台,集成渤海海洋石油及平台管线信息、平台生产及排污信息、海洋环境信息,设计并实现了北海区海洋石油平台管理系统。系统采用B/S结构,通过"数字海洋"北海分局节点提供集成身份验证和数据服务环境,利用WWJava Applet提供3维地图支持,地图与数据页面使用JavaScript脚本进行交互,形成管理、查询、统计与业务支持为一体的综合地理信息业务支持系统。实际应用证明,本系统有效地提高了北海区海洋石油平台监管与问题处置能力。 相似文献
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分析了当前海洋温度场数据在数据和模型共享与应用方面存在的不足,结合Web Service技术,提出在分布式网络环境下将海洋温度数据与应用模型封装为web服务的方式,实现多源海洋温度场数据时空过程可视化应用的方法。并基于该方法构建了"多源海洋温度数据动态集成与远程可视化系统平台"。通过该平台的构建,为用户提供海洋温度数据的透明的Web应用,实现了基于网络对多源海洋温度场数据的集成与交互式时空过程可视化表达。 相似文献
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从不动产登记业务实际需求出发,着眼于当前不动产登记资料归档和查询利用所面临的问题,研究高效、规范的不动产登记档案信息化管理方法。提出并设计了基于现有不动产登记平台和国土资源"一张图"平台的档案管理系统建设框架,借助系统间的集成交互与数据共享,优化不动产登记资料的归档和查询利用。为了提高归档效率,提出将不动产登记平台作为归档数据提供者,制定业务数据向档案数据转换的映射规则,将各类业务数据直接转换为档案著录或电子档案,实现自动归档。针对档案查询利用问题,讨论了基于业务节点时序和基于空间位置的档案关联方法,将分散的档案案卷建立关联关系,为历史追溯查询和空间查询提供数据基础,实现多元快速查档。 相似文献
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《测绘文摘》2012,(3):40-42
正CH20121436基于Web服务的多源Argo数据共享与可视化应用研究=Multisource Argo Data Sharing and Visualization Based on Web Service/杨峰(中国科学院地理科学与资源研究所),周建郑,杜云艳,肖如林//测绘科学.-2011,36(5).-62~64分析了当前海洋Argo观测数据在数据和模型共享与应用方面存在的不足,结合WebService技术,提出在分布式网络环境下将海洋Argo数据与应用模型封装为Web服务的方式,实现多源海洋Argo数据集成与可视化应用的方法。基于该方法构建了"多源海洋Argo数据动态集成与远程可视化系统平台"。通过该平台的构建,为用户提供海洋Argo数据的透明的Web应用,实现了基于网络对多源海洋Argo数据的集成与交互式可视化表达。图6参8 相似文献
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基于ArcGISEngine的土地登记发证综合查询系统研究 总被引:5,自引:1,他引:4
在简要介绍土地登记业务的基础上,进行信息化需求及功能设计需求分析,使用PowerDesigner数据库建模工具,基于SQLServer数据库管理系统进行数据的设计和创建。系统实现采用数据字典技术、动态数据模型技术和数据更新技术,基于ArcEngine平台实现土地登记公开查询系统。 相似文献
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采用Landsat TM数据分析了阿克苏河—塔里木河断面水质污染状况,通过波段的DN值和常规监测数据建立能反映水质状况的
污染物监测模型。结果发现,将2000年常规监测数据代入模型后,与遥感数据的结果基本吻合| 重建阿克苏河—塔里木河的连续水体
污染变化曲线,得出污染物浓度随着远离上游而增加。 相似文献
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Monitoring drought dynamics in the Aravalli region (India) using different indices based on ground and remote sensing data 总被引:5,自引:0,他引:5
C. Bhuiyan R.P. Singh F.N. Kogan 《International Journal of Applied Earth Observation and Geoinformation》2006,8(4):289-302
The hard-rock hilly Aravalli terrain of Rajasthan province of India suffers with frequent drought due to poor and delayed monsoon, abnormally high summer-temperature and insufficient water resources. In the present study, detailed analysis of meteorological and hydrological data of the Aravalli region has been carried out for the years 1984–2003. Standardised Precipitation Index (SPI) has been used to quantify the precipitation deficit. Standardised Water-Level Index (SWI) has been developed to assess ground-water recharge-deficit. Vegetative drought indices like Vegetation Condition Index (VCI) and Temperature Condition Index (TCI) and Vegetation Health Index (VHI) have been computed using NDVI values obtained from Global Vegetation Index (GVI) and thermal channel data of NOAA AVHRR satellite. Detailed analyses of spatial and temporal drought dynamics during monsoon and non-monsoon seasons have been carried out through drought index maps generated in Geographic Information Systems (GIS) environment. Analysis and interpretation of these maps reveal that negative SPI anomalies not always correspond to drought. In the Aravalli region, aquifer-stress shifts its position time to time, and in certain pockets it is more frequent. In comparison to hydrological stress, vegetative stress in the Aravalli region is found to be slower to begin but quicker to withdraw. 相似文献
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Piyoosh Rautela Ramesh Chandra Lakhera 《International Journal of Applied Earth Observation and Geoinformation》2000,2(3-4)
The area around Sataun in the Sirmur district of Himachal Pradesh, India (falling between the rivers Giri and Tons; both tributaries of the Yamuna River) was studied for landslide vulnerability on behalf of the inhabitants. The study was made using extensive remote sensing data (satellite and airborne). It is well supported by field evidence, demographic and infrastructural details and aided by Geographic Information System (GIS) based techniques. Field observations testify that slope, aspect, geology, tectonic planes, drainage, and land use all influence landslides in the region. These parameters were taken into consideration using the statistical approach of landslide hazard zonation. Using the census data of 1991, vulnerability of the populace to the landslide hazard was accessed. As most of the infrastructure in the region is concentrated around population centres, population data alone was used for vulnerability studies. 相似文献
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ZHAN F. Benjamin 《地球空间信息科学学报》2011,(1)
Although it is well known that coseismic gravity changes take place during an earthquake, previous research has not yielded convincing evidence demonstrating that significant gravity changes occur before large earthquakes. Furthermore, even if we suspect that gravity changes occur before large earthquakes, we have yet to demonstrate how to consistently observe these changes for useful earthquake forecast that would bring benefits to society. We analyzed ground gravity survey data obtained in 1998, 2000, 200... 相似文献
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GNSS系统及其技术的发展研究 总被引:3,自引:1,他引:2
阐述了国际上卫星导航系统的总体发展,对美、俄、欧、中的四大全球系统,以及相关的区域系统和增强系统进行了简单的介绍,研究分析了GNSS系统及其技术的发展趋势,同时分析了我国Compass全球系统面临的机遇和挑战,并提出了我国未来工作的建议. 相似文献
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“4D”技术及其应用 总被引:13,自引:0,他引:13
介绍“4D”(即数字地面模型、数字正射影像、数字栅格地图和数字线划地图)系列产品的生产流程、关键技术、及其在耕地保护、防灾减灾救灾和城市规划等方面的应用方法。 相似文献
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《International Journal of Digital Earth》2013,6(1):66-87
Abstract Virtual Australia is not a well-defined or agreed concept. This discussion paper conceptualises Virtual Australia as a ‘virtual [digital] model containing and representing all non-trivial objects and their contextual environment – from blue sky to bedrock – in real world Australia’. It describes a scenario for Virtual Australia, one or two decades from now, in which the locations and conditions of non-trivial objects and their environment are updated automatically through a combination of remote sensing and wireless communication technologies in support of a ‘Supranet’. It then examines the concept of the ‘Supranet’ – a pervasive information network based largely on wireless technology linking the physical world to a virtual model in real time – and develops and discusses three principal characteristics of the Supranet: the ability to have or collect specific information (know); the ability to process information (think); and the ability to communicate that information. If, in the near future, any or all non-trivial devices are to some extent able to know, think and communicate, the potential for object autonomy will be realised. 相似文献
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自动车辆定位导航系统中传感器的误差分析 总被引:1,自引:0,他引:1
对国界定位导航系统中几种常见的辅助传感器所产生的误差进行了分析,导出了不同传感器的误差模型。这些误差模型是估计车辆位置的扩展卡尔曼滤波器的基础,同时也为选择适当的传感器提供了理论根据。 相似文献