共查询到20条相似文献,搜索用时 250 毫秒
1.
随着经济的发展,传统的测绘技术已经很难满足公路前期设计要求。LIDAR技术的应用解决了这一难题,其数据采集处理,以及DEM、DOM在公路勘察设计的应用,大大减少了外业测量劳动强度,与传统航测法设计成果比较,具备设计周期短、精度高的特点,为公路路线方案设计提供合理、准确地计算工程量奠定了良好的基础。本文通过LIDAR技术在喀什-伊尔克什坦高速公路工程测量中的应用,阐述其先进性、适用性和在未来测绘的主导地位。 相似文献
2.
LIDAR开辟了由空中直接获取高精度三维地面信息的新途径,获取数据的速率和精度大大提高,数据的应用范围更加广泛。DMC影像具有高分辨率,色调饱满,影像清晰、洁净,具有比传统扫描摄影胶片获得的影像具有更好的品质。本文介绍LIDAR与DMC的综合应用,提出一种无地面控制的航测新方法,能够经济而快速,高精度地获得测区的现势4D产品,对研究二者的综合应用有一定的参考意义。 相似文献
3.
4.
5.
大连市基础测绘1:500比例尺地形图工程,主要是通过航空摄影测量所得的航测相片,经内业立体测图,航测外业调绘,野外数据采集,内业编绘等过程来完成。其中内业立体测图的方式和方法是提高精度的关键,它关系着整个工程的进度和质量。探讨了"数字大连"线划图内业立体测图的方式与方法。 相似文献
6.
7.
叶海全 《测绘与空间地理信息》2015,(9):219-221
基于福建省开展农村地籍调查与不动产登记的需求,使用优于0.2 m分辨率航空影像,探讨航测技术应用于农村地籍调查中的适宜性与可靠性。通过选取4个具有代表我省地形地貌特点的区域,分别采用航测法与图解法对农村地籍要素进行量测,统计分析量测的界址点所能达到的数学精度,阐述航测技术中精度控制的关键技术。通过实验研究,最后对我省开展农村地籍调查合理的施测方案进行总结。 相似文献
8.
9.
10.
激光技术应用于遥感已经有40多年[1]。机载激光雷达(LIDAR)技术自其产生之初就以其快速、密集、精确、全天候的数据采集能力震撼了航测遥感领域,尤其是21世纪以来该技术在设备更新、数据后处理、应用可行性上都取得了巨大进步。随着国家经济建设对测绘快速生产能力的要求逐步提高,LIDAR数据的后处理技术成为了一个重要的研究领域,而LIDAR点云数据的可视化开发作为各类离散采集数据进入应用软件的第一步,也成为了新的起点。在分析了LIDAR数据处理的含义和现状之后,以点云数据导入AutoCAD为例,讨论了点云数据读取和显示中需要注意的问题以及使用C++.NET和ObjectArx二次开发AutoCAD的相关问题。 相似文献
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