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本文采用GeoWay软件进行了南通测区1:10000DLG生产工作。对1:1000DLG生产的技术路径、作业方法作了探索,取得了一定的经验。 相似文献
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通过具体测区的生产应用,介绍了直接使用非量测数码影像在InterGraph SSK系统中进行空中三角测量的方法和工作流程,并分析了其精度情况. 相似文献
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西部测图工程跨越传统测绘作业模式,采用了一些航空航天遥感新技术。根据多年的西部测图工程地形图测绘生产的实践,通过对其中涉及的一系列生产技术进行认真学习、研究和应用,对西部测图工程内业生产中的关键技术进行多方位的总结。同时结合本职工作,对如何更好地开展测绘工作、更快地提升技术水平也进行一些探讨。 相似文献
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随着RTK技术在数字化测图方面的应用日益广泛,但对地形复杂测区,普通RTK技术常遇到诸多问题,造成作业效率低下。而CORS系统中的网络RTK技术是GPS-RTK技术进一步延伸,采用网络通讯大大延伸了RTK的作业半径,提高了定位精度和可靠性,以工程项目为例,详细介绍了网络RTK技术在数字化测绘中的应用。 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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测土配方施肥技术与WebGIS技术相结合,为指导农业生产中的精准施肥、提升作物产量提供了科学指导。本文介绍了测土配方施肥技术以及WebGIS技术目前的发展现状,并进一步探讨了WebGIS在土壤测土配方施肥应用中的技术方案及技术路线,对促进测土配方施肥技术推广、提高农民收益具有重要意义。 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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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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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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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