共查询到20条相似文献,搜索用时 437 毫秒
1.
基于MapGIS的公路选线 总被引:5,自引:0,他引:5
结合GIS技术论述公路选线的自动化实现方法;利用MapGIS软件,通过对一实验选线区域的公路线路方案的确定,证明GIS技术支持下的公路选线方法准确、高效。 相似文献
2.
3.
三维GIS具有表达直观、三维空间分析等特点,可以为电力线路勘测选线提供强大的辅助设计支持及空间分析功能。在分析传统的电力线路选线方法的不足的基础上,提出了三维GIS技术在电力线路选线设计中的应用方法,并着重研究了电力选线三维系统的总体建设内容、三维可视化场景的建设方法和专题应用功能的设计思路,以及应用该系统对实际的电力线路选线设计进行了实践,满足了电力选线的要求。 相似文献
4.
介绍了互联网地图在公路测量中的找点、选线、测图、绘图环节中的应用方法,阐述了传统纸质地图和互联网地图在公路测量中各环节的作业流程、技术方法、投入的人员等各自特点,同时对二者的优缺点进行了分析比较,得出了互联网地图较纸质地图在成图、作业效率、质量保障等方面的明显优势,同时还探讨了互联网地图作业中的涉密问题和作业员在测量中应遵循的保密法则。互联网地图内容丰富形象,具有可与GPS定位联动的实时性。互联网地图的应用改变了传统作业模式,提高了公路测量的工作效率和作业质量,降低了项目成本,对公路测量工作具有重要的现实意义。 相似文献
5.
近年来,我国公路对自然生态环境的影响随着通车里程的增加而日益显著。在公路选线的过程中,全面分析拟建公路走廊带内景观破碎度的空间分异特征,可有效减少公路修建对生态环境的不利影响。本文利用遥感分类技术和GIS(地理信息系统)空间分析方法,以湖南长湘公路走廊带某段土地斑块和景观分类为基础,借助斑块密度指数、最大斑块指数和相似邻近比指数,在斑块类型水平和景观水平两个层面全面分析公路走廊带内自然林地景观、农业景观和城乡建设景观破碎度的空间分异特征。结果表明:长湘公路走廊带内景观破碎度高的地区主要分布在大型斑块边缘、平原地区以及公路沿线;自然林地景观和农业景观的破碎度较低,城乡建设景观的破碎度较高;城乡建设景观的破碎度与公路相关性最强,表现出顺应公路走向的条带状蔓延特征。该研究成果可为公路选线方案的制订和完善提供环境影响方面的参考。 相似文献
6.
本文提出了基于GIS技术的电力选线多方案综合评价设想,包括应用GIS技术提取电力选线方案信息,以便应用层次分析方法实现电力选线多因素的综合分析及多方案综合比选。 相似文献
7.
基于GIS技术的公路选线多方案综合评价 总被引:1,自引:0,他引:1
孔金玲 《武汉大学学报(信息科学版)》1999,24(3):08
提出了基于GIS技术的公路选线多方案综合评价的方法,包括应用GIS技术提取公路选线方案的评价指标信息,应用层次分析方法实现公路选线多因素的综合分析及多方案综合比选。实例验证了该方法的有效性。 相似文献
8.
9.
基于GIS技术的公路选线多方案综合评价 总被引:18,自引:0,他引:18
孔金玲 《武汉测绘科技大学学报》1999,24(3):213-215,220
提出了基于GIS技术的公路选线多方案综合评价的方法,包括应用GIS技术提取公路选线方案的评价指标信息,应用层次分析方法实现公路选线多因素的综合分析及多方案综合比选,实例验证了该方法的有效性。 相似文献
10.
11.
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
12.
13.
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
14.
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
15.
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
16.
17.
“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
18.
《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
19.
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