共查询到17条相似文献,搜索用时 15 毫秒
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EPSW(Electronic Plane-table Surveying and Mapping System for Windows)是一款优秀的数字测图软件,主要用于地形测量,并不提供二次开发语言。本文利用QBASIC语言平台,以在EPSW中实现横断面图的自动绘制为例,指出了其二次开发的原理与方法,是一个新的应用方向。 相似文献
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当前时空智能(SpaceTimeAI)和地理空间智能(GeoAI)已是热门的话题,该研究领域旨在将计算机科学的最新方法(如深度学习)应用于地理空间问题。虽然深度学习方法因其对栅格数据的自然适用性而在图像处理中取得了巨大成功,但仍未广泛应用于其他空间和时空数据类型。本文提出使用网络和图作为SpaceTimeAI或GeoAI的基本结构的倡议,并将其应用于城市研究中。相比于基于网格的表达,基于网络的结构更加精确和实用。图能实现对点、线、面/多边形/网格和网络等多种空间结构的表达。本文通过时空预测、聚类和时空优化等常用时空分析方法展示基于网络和图的时空智能分析的优势,并介绍其在交通出行、警务和公共卫生等领域的应用。 相似文献
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分析DLG线划图产品数据错误产生的原因和主要表现形式,在此基础上详细论述G IS系统自动探测DLG线划图两类关键性错误的技术线路,并基于MapInfo系统实现了上述功能。实际处理效果表明,该技术与人工纠错方法相比具有简单、快速、准确等优势,具有一定的应用价值。 相似文献
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长期以来,测绘外业调绘工作难度大、强度也大,在计算机辅助外业调绘的作业模式下,如何在立体测图中有效利用外业调绘数据、提高作业效率、降低劳动强度是一个值得探究的问题。根据实际生产经验,提出了对2维平面调绘数据进行3维化处理的技术方案,并应用于国家1∶50000无图区测图工作中。它改变了以往的作业模式,为外业调绘的2维数据在立体测图中的利用提供了切实可行的技术途径。 相似文献
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秦岭地区地形以山地为主,地物地貌较复杂。通过"秦岭地区1∶10 000地形图空白区测图工程"项目实践,介绍秦岭地区1∶10 000像片调绘的方法,以及在作业中应注意的一些问题及其解决方法。 相似文献
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新技术在国家西部1∶50000地形图空白区测图工程中的应用 总被引:1,自引:0,他引:1
国家西部1:50000地形图空白区测图工程(简称西部测图工程)是填补我国西部1:50000基础地理信息空白区的国家重大测绘专项,涉及区域地形、气候、交通等条件异常恶劣,常规测绘手段难以完成全部测图任务。集成航天遥感、数字航空摄影、航空航天合成孔径雷达、全球定位和地理信息系统等现代地理空间信息技术,综合利用多种已经发展成熟的和新型的遥感影像测图技术,是西部测图工程顺利实施关键所在。文章对西部测图工程中使用的这些测绘新技术、新方法进行了较为详细的阐述,这些测绘新技术、新方法形成西部测图工程的创新技术体系,为西部测图工程提供了具有自主知识产权的测图软硬件系统,促进测绘整体技术水平的提高、产业进步与升级。 相似文献
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RTK控制网结合全站仪在城市测图中的应用及注意事项 总被引:1,自引:0,他引:1
GPS-RTK和全站仪测图是城市测图技术的发展趋势。根据多年RTK控制网结合全站仪进行城区测图的实际生产经验对测图中的一些问题进行了探讨,主要包括GPS-RTK控制测量中应注意的事项,以及全站仪测图的特点和易出错的环节。 相似文献
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Unmanned Aerial Vehicles (UAVs) could flexibly and efficiently observe land surface and obtain surface information at very high frequency and resolutions. In recent years, UAV technology has been greatly improved and the UAVs are increasingly applied in large amount of civilian fields. The UAV Remote Sensing (UAVRS) is a comprehensive technology composed of UAV flying aircraft, light remote sensing payload, satellite positioning device, remote-control system, communication technology and application technology. An UAVRS system is mainly composed of UAV platform, load system, ground control and data transmission system and image processing system. With the popularity of civilian UAV products and the development of UAV remote sensing payload, UAVRS also shows an explosive growth trend in various industries. However, the short battery life and limited coverage of the civilian drones are one of the key factors restricting the UAVRS applications. Besides, although the application of UAVs in various industries and fields continues to deepen, most of them are single-type applications in a certain discipline or industry. The 5G technology and wireless communication technology advance and will give rise to the UAVRS applications in terms of“networking”,“IoT”, and“real-time”, as well as cross-domain and convergence application. The modern cities are highly complex and sociotechnical. They comprise people and communities interacting with one another and with objects (e. g., roads, buildings) within a range of urban settings or contexts. It is extremely difficult to monitor and manage such complex sociotechnical systems. The monitoring and mapping of pollutions, traffic, infrastructures are great challenges in rapidly changing cities, and especially gained increasing attentions of citizens and are putting great stresses on policy makers and urban planners. Theoretical and practical efforts to create better city monitoring and management systems have a long history. In the 21st century, we recognize and conceive “creative”,“smart”and“knowledge”cities, in which the multidisciplinary Information and Information and Communication Technology (ICT) has played a vital role. The Internet of Things (IoT) promotes the development of the smart cities. However, in various urban domains, the cities equipped with a sensor-based web, or a cyber-physical information infrastructure, are far from sufficient to help policy makers or citizens to get a full understanding of the real time or near real time city conditions. To this end, due to their mobility, autonomous operation, and communication/processing capabilities, UAVs are envisaged in many smart city application domains. In this article, we describe a technology of air-ground collaborative low-altitude UAV remote sensing network system. The system composes of intelligent UAV, the UAV base station (drone-in box) and operation system. The UAV remote sensing network can provide high-frequency and real-time observations of the land surface. Based on the UAV remote sensing network, we constructed a comprehensive application for urban governance. An UAVRS network composed of eight UAV base stations was deployed in Danzao Town, Foshan City. Connected through 5G network, the UAVRS network advances the UAV inspection frequency, spatial coverage, and response time. It provides revolutionary and intelligent services for local agents and departments of water affairs, environment protection, public security, urban management, and emergency. The UAVRS network system in Danzao is expected to develop a real-world smart city paradigm that could be copied and migrated to other towns across the country. © 2023 Science Press. All rights reserved. 相似文献
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介绍了智能全站仪的组成、测量原理及其发展应用,并开发了基于智能全站仪的快速测量处理系统.通过与传统测量方法进行对比,实测表明该系统自动化程度高、实用性强、实时高效,是进行各种控制测量的理想系统. 相似文献