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2011年8月在新疆天文台南山观测站首次进行了GPS与VLBI空间大地测量技术并置站的本地连接测量。针对南山并置站,本文在建立、优化南山GPS控制网的基础上,探讨本地连接测量中GPS数据处理的方法、精度。通过对GPS控制网7 d连续观测和基于IGS精密星历的GAMIT基线处理、三维空间平差,结果表明:基线在N、E和长度方向的重复性在0.3~0.4 mm,U方向分量重复性为1.4 mm,基线相对精度为0.8×10-8,达到《全球定位系统(GPS)测量规范》(GB/T 18314—2009)中A级网的精度要求,GPS控制点在ITRF2008系统下的坐标精度均优于0.5 mm。 相似文献
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以郑州市5个主城区为例,结合高分遥感影像、国情调查等数据,筛选了73个公园绿地,通过GIS缓冲区分析、网络分析,得到不同类型的公园绿地的缓冲区范围、多时间段可达范围、可达街区面积和不同类型的面积占比,探讨5个主城区内绿地公园分布的空间规律和服务范围。研究表明：就郑州整个城区而言,绿地明显呈现集聚分布的特点。金水区、管城区、中原区公园绿地分布相对集中,20 min服务范围能够覆盖本区域70%以上的街区,分布均衡合理;而二七区和惠济区公园绿地的分布数量和服务范围上都有待提高。分析结果能够为国土空间规划提供一定的数据支撑,从而不断完善郑州市公园绿地的分布,达到布局科学合理、资源公平共享的格局。 相似文献
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以神农架大九湖湿地公园为研究对象,介绍了大九湖国家湿地公园GIS管理系统功能和目标;分析了该系统构架体系;阐述了该系统空间数据库建设;指出大九湖高山湿地公园GIS管理系统将为湿地研究和湿地管理提供技术和决策支持,从而实现湿地公园管理科学性和规范性。 相似文献
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文章以镇海风景九园为例,详细阐述了规划审批中建设项目3维模型的构建、数据组织、方案展示等关键技术,说明了3维辅助建设项目方案审查的实施方案和生产作业流程。 相似文献
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Use of Information Technology for Community Empowerment: Transforming Geographic Information Systems into Community Information Systems 总被引：4，自引：0，他引：4
Rhina Ghose 《Transactions in GIS》2001,5(2):141-163
GIS has emerged as an elitist, anti-democratic technology by virtue of its technological complexity and cost. The question of democratizing this technology has been addressed in the GIS and Society literature. This paper addresses the thorny issue of uneven access to GIS and the associated social power it confers. Following the principle that effective access to information leads to better government as well as to community empowerment, this paper explores the issues of providing equitable access to GIS at the grass-roots level. The paper discusses a university/community partnership with the distressed, inner city neighborhood of Metcalfe Park in Milwaukee, Wisconsin. In this project, the members of an inner-city neighborhood organization were given training in GIS for accessing public information, creating new databases from their own surveys, and analyzing these databases, with the purpose of making them able and active adjuncts to the conduct of city management and the formation of public policy. The paper evaluates the successes and failures of the project. It also explores the nature of GIS usage in this resource poor community organization between 1993–2000. 相似文献
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工程外包能很好地解决地方测绘部门人员少、基础测绘任务重的难题,本文从项目的招标、合同的签署、监理队伍的组建及全过程质量管理四方面对厦门市测绘工程外包的质量管理作了详细地阐述,并进行实例介绍,测绘工程实施过程监理的经验和做法对各地具有普遍的借鉴意义. 相似文献
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程卫兴 《测绘与空间地理信息》2011,34(5):188-190
以番禺区沙湾桥南片现状道路数字化带状地形图测绘工程为例,通过对空间数据质量以及数字测图质量控制概念与内涵的分析,研究了数字测图质量控制的依据与流程,设计了基于GIS的数字测图质量管理软件系统,在工程实践中取得了良好效果。 相似文献
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王晔 《测绘与空间地理信息》2017,(4)
通过大连金普新区建设变化监测项目的工作实践,系统地阐述了该项目的内容、方法、生产工艺和质量控制,对保证项目的顺利进行、保障数据的真实可靠具有重要意义。 相似文献
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由于测绘项目需要在野外工作,且具有工作流动性、单一性,资料保密性、特殊性等特点,使得测绘单位与其他工业、工厂、食品生产单位相比,管理更具复杂性。尤其是一些大型工程,如西部无人区测图、全国1∶50 000地形图数据库更新、青海东部黄河谷地百万亩土地开发整理、陕西秦岭1∶10 000无图区等测绘项目,施工过程中若有一点疏忽甚至微小的纰漏就会造成重大工程质量问题。近几年来,国内工程项目质量不合格现象频频发生,形势比较严峻。笔者结合测绘项目的特点提出运用"一法三化"进行测绘质量项目管理的管理理念。 相似文献
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以上海长风公园导航地图的制作为例,探讨了结合GIS软件与传统绘图软件制作电子地图,提高电子地图可视化质量的方法;分析了电子地图制作过程中数据转换、地图配准等技术问题的处理措施.结合CorelDraw的绘图功能和SuperMap Deskpro的空间数据处理功能,可使导航电子地图的视觉效果明显增强. 相似文献
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工程测量质量管理与监测直接影响项目施工质量和可靠性,本文就近几年的工程测量质量管理与监测工作的实践,提出了加强工程测量项目的组织管理、质量管理和具体实施等具体方法,确保了项目建设过程中测量问题能够得到较好的解决。 相似文献
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Cawthorn Camps is a Roman site of probable late 1st and early 2nd century date comprising two forts, one with a later annexe, and a camp. The site survives as earthworks and, within the main defences, there are many slight embanked structures. The current multidisciplinary programme of research has included geophysical prospection, excavation, ground and aerial survey; it is a joint initiative by the North York Moors National Park Authority and English Heritage. The project aims to increase academic understanding, improve information available to the public and assist the production of a revised management plan for this nationally important site.
Large-scale air photographs and digital photogrammetry have been used to produce a plan, at scale 1:500, of the earthworks to a precision of ±10 cm. This plan has been used as a base map with which to rectify other key photographs and plans allowing further detailed interpretation and mapping to be undertaken. The air photographic work has also investigated some of the products available through digital photogrammetric technology, such as digital elevation models (DEMs), orthophotographs and perspective views. 相似文献
Large-scale air photographs and digital photogrammetry have been used to produce a plan, at scale 1:500, of the earthworks to a precision of ±10 cm. This plan has been used as a base map with which to rectify other key photographs and plans allowing further detailed interpretation and mapping to be undertaken. The air photographic work has also investigated some of the products available through digital photogrammetric technology, such as digital elevation models (DEMs), orthophotographs and perspective views. 相似文献