共查询到20条相似文献，搜索用时 78 毫秒
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同志们: 《中国国土资源年鉴》、《国土资源通讯》工作会议今天就要结束了。会上,李元副部长作了重要讲话,刘允洲、吴哗同志分别作了年鉴和机关刊的年度工作报告。江西、山东、陕西、吉林、四川、辽宁、湖北等省的同志介绍了办刊做法和经验。与会同志认真学习了李元副部长的讲话精神,就进一步提高年鉴的质量和时效、增强机关刊的可读性和感染力提出了许多好的意见和建议。大家集中精力、热情参与,积极思考、踊跃发言,进一步统一了办刊思想,交流了办刊经验,明确了办刊思路,达到了预期目的。这次会议,年鉴工作和机关刊工作两个会议一起开,降低了成本,节约了时间,提高了效率,取得了圆满成功。 相似文献
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GML和SVG解决了网络矢量图形图像发布存在的问题,为空间信息网上发布提供了新的方法和途径。本文探索了将SVG与GML结合应用于WebGIS的解决方案和应用模式,并详细分析了系统实现的体系结构和相关技术,着重论述了空间数据、GML与SVG之间的转换方法,最后给出了系统的应用实例。 相似文献
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介绍了西安连续运行卫星定位综合服务系统的构成和测试方法,分别从定位精度、时间可用性、空间可用性、网络RTK初始化时间、系统的兼容性和静态后处理精度5个方面对系统进行了测试,对系统的精度和性能指标进行了统计和分析,得出了相应的测试结论,表明该系统达到了设计标准,并为系统今后的应用和推广提供了参考依据。 相似文献
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遥感(RS)和地理信息系统(GIS)是支撑现代地理学的两大空间技术工具,近年来两者的结合引起了人们的普遍关注和研究。本文阐述了RS和GIS的特点和发展趋势,探讨了RS和GIS之间的密切联系和相互支撑关系,并结合自己的工作实践浅谈了RS和GIS在土地利用动态监测和现状调查中的应用。 相似文献
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分析了建立靶场WebGIS的重要意义和迫切性,指出了基于ArcIMS进行开发的优势,并论述了ArcIMS的体系结构。依据该系统运行环境和特点,提出采用富客户端方案部署系统服务器。然后设计并实现了靶场WebGIS的结构和功能,详述了它的运行机理和开发中的两项关键技术,最后对系统作了分析和评价。 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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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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Toward seamless indoor-outdoor applications: Developing stakeholder-oriented location-based services
Kohei OGAWA Edward VERBREE Sisi ZLATANOVA Naohiko KOHTAKE Yoshiaki OHKAMI 《地球空间信息科学学报》2011,14(2):109-118
Location-Based Services (LBS),an emerging new business based on smartphone and mobile networks,are becoming more and more popular.Most of these LBSs,however,only offer non-seamless indoor/outdoor applications and simple applications without giving stakeholders the chance to play an active role.Our specific aim is to solve these issues.This paper presents concepts to solve these issues by expanding the Open Location Services Interface Standard (OpenLS) to allow seamless indoor/outdoor positioning and to extend the content of the services to include information recommended by stakeholders. 相似文献
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李志宽 《测绘与空间地理信息》2009,32(2)
3维技术以其直观、眩目的表现力深受人们喜爱.利用3S技术和Skyline开发平台,可以构建大型企业3维地理信息系统,以满足企业设计部门和资产管理部门对基础地理信息的需求.兼容原有2维系统的总图3维信息系统,将为企业的日常管理、设计施工、分析统计、规划决策等提供更加可靠、直观、多层次、多功能的综合服务信息. 相似文献