测量机器人隧道变形自动监测系统的研究进展

在介绍测量机器人隧道变形自动监测系统的原理及结构基础上,采用文献分析和比较分析方法,综合分析测量机器人隧道自动监测系统在隧道结构自动化变形监测中的应用情况。分析表明,测量机器人隧道变形自动监测系统具有精度高、实时、动态、全天候智能远程遥测的优点,在地铁和隧道工程安全监测领域具有一定的应用前景。其局限性是只能逐个单点定期监测,增加工程监测的成本。因此,控制成本、开发多点监测功能并全面实现自动化、智能化和网络化是其发展方向。     

某地铁区间盾构法施工监测分析

地铁区间盾构法施工监测是确保地铁区间施工安全的重要保障。在分析盾构隧道施工地表建（构）筑物沉降监测、建（构）筑物倾斜监测、裂缝监测、隧道管片隆沉监测、隧道管片水平收敛监测等监测内容、监测方法、监测频率及控制标准的基础上,结合某地铁区间盾构法施工监测工程实践,分析所获得的横向地表沉降、隧道管片沉降或隆起、净空水平收敛监测的结果,得到相应横向地表沉降、纵向地表沉降和沉降过程的规律,以及隧道管片沉降或隆起、净空水平收敛监测变形规律。     

重庆市地理国情监测管理体系框架初探

随着地理国情监测工作的常态化推进,需要对监测的源头、方法、过程和成果进行监督管理,以保障监测成果的公正性,提高地理国情监测的权威性。本文在地理国情监测工作基础上,从工作保障体系和技术支撑体系两个方面展开,探讨重庆市地理国情监测管理体系框架,旨在指导重庆市地理国情监测工作顺利、高效开展。     

变形监测理论与技术研究进展

论述变形监测在工程建设、管理中的目的与意义,以及变形监测的内涵变迁;详细论述并讨论监测系统的设计理论、监测技术和监测数据处理理论的发展进展;总结变形监测理论和技术的发展趋势。     

北斗系统在建筑安全监测领域的应用研究

以故宫博物院基础设施改造工程综合在线监测与预警系统的建设为例,研究了我国北斗卫星导航系统在建筑安全监测领域的应用,分析了北斗建筑安全监测的监测对象、内容以及精度;介绍了北斗建筑安全监测服务平台的三级监测服务平台以及监测自动化系统。     

高层建筑物的监测

高层建筑物在施工过程中,需同时进行沉降监测、垂直度监测、层高监测,本文根据工程实践,介绍高层建筑物的监测过程,以确保施工质量,可供高层施工参考。     

基于GF-1的冬小麦遥感监测区域适用性分析

以湖北省为研究区,从地形地貌、种植结构、监测时相、谱段设置以及监测精度等方面综合分析了GF-1卫星数据在冬小麦种植面积遥感监测中的区域适用性。研究表明,GF-1卫星数据对江汉平原、鄂东沿江平原、鄂北岗地以及鄂东丘陵等地区的冬小麦遥感监测均有较好的适用性,其监测精度能够满足湖北省冬小麦大尺度遥感监测的精度要求,但难以达到小范围的遥感监测精度要求。     

工程信息化监测在上海市地铁施工建设中的实例分析

结合上海地区的诸多地铁建设工程实例,分析和介绍了围绕地铁建设和地铁维护保养的多种类信息化监测技术.在合理安排监测内容、监测手段和监测频率的基础上,指出监测资料分析是把握监测质量、反馈施工信息的最重要环节.     

GPS技术在滑坡变形监测中的应用

介绍了GPS技术用于滑坡变形监测的方法,并通过三峡库区某滑坡的变形监测介绍了GPS用于滑坡变形监测的整个过程,包括监测网的技术设计、外业观测、数据处理、变形分析等内容。监测结果表明,GPS静态定位技术可以达到mm级的精度,在变形监测方面有很好优越性,完全可以满足高精度滑坡监测的要求。     

合成孔径雷达在农业监测中的应用和展望

合成孔径雷达(SAR)技术具有全天时全天候的监测优势,且随着多频、多极化SAR技术的发展,在农业上取得了越来越广泛的应用。归纳了SAR技术在农业监测中的应用进展,主要包括SAR技术在农作物分类和面积提取、农业物理及生物参数反演、农作物物候监测、农业灾害监测等方面的应用;并揭示了SAR技术在农业监测上的潜力和局限性。     

阿克苏河-塔里木河水系水质污染遥感监测与评价

 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。     

Gravity Changes Before Large Earthquakes in China: 1998-2005

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...     

Landslide risk analysis between Giri and Tons Rivers in Himachal Himalaya (India)

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.     

GNSS系统及其技术的发展研究

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.     

“4D”技术及其应用

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。     

Virtual Australia: its key elements – know,think, communicate

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.     

Toward seamless indoor-outdoor applications: Developing stakeholder-oriented location-based services

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.     

GIS空间数据的采集误差及其分析

本文详细阐述了GIS数据采集过程中的误差来源，重点分析了通过地图、遥感和摄影测量等方式采集数据所产生的误差及其特性，分析了其对GIS数据的影响与消减方法。     

基于Skyline的企业总图3维信息系统

3维技术以其直观、眩目的表现力深受人们喜爱.利用3S技术和Skyline开发平台,可以构建大型企业3维地理信息系统,以满足企业设计部门和资产管理部门对基础地理信息的需求.兼容原有2维系统的总图3维信息系统,将为企业的日常管理、设计施工、分析统计、规划决策等提供更加可靠、直观、多层次、多功能的综合服务信息.