单基站CORS在矿山测量中的精度分析及应用

简述了CORS系统的原理和单基站CORS系统的组成部分及建造步骤,结合朱集东矿单基站CORS系统的实际测量情况,对单基站CORS系统在矿山测量中应用的精度进行分析,通过对系统的精度分析,说明单基站CORS系统具有可在地表移动监测中和矿山测量中应用的优势。      

单基站CORS系统在中小区域测绘中的应用探讨

本文对单基站CORS系统的建设和应用进行了探讨,通过单基站CORS系统在成都市龙泉驿区的建设使用情况和数据检验分析,表明单基站CORS系统完全可以胜任中小区域中的一般测量工作。其作业的有效范围广,在保证测量精度的前提下,提高了作业效率,降低了劳动强度和生产成本。     

单基站CORS系统在城镇地籍测量中的应用

单基站CORS系统在城镇各测量领域得到逐步普及。以长春市双阳区城镇地籍测量为例,对单基站CORS系统在城镇地籍测量中应用的范围、精度、优缺点、局限性等方面进行论述,为国土资源及测绘部门提供参考。     

单基站CORS系统在池州市“数字城市”像控点测量中的应用

重点介绍了单基站CORS系统在池州市"数字城市"像控点测量中的应用,同时对单基站CORS系统的建立、作业流程以及质量控制进行了简要阐述。     

玲珑金矿单基站CORS转换参数求解与精度测试

随着CORS系统快速发展和应用,需要对系统进行测试,为实际测量工作提供可靠的经验数据。本文在玲珑金矿采用南方单基站CORS系统进行了实测分析,通过实测数据与已知数据进行比较,通过内外符合精度计算,统计分析单基站CORS系统在矿区范围内所能达到的精度,验证CORS系统单基站在矿区一定范围内完全符合矿区基本控制的精度要求,这证明该系统在矿区平面控制网改造及外业测量工作中完全鞥能满足精度要求,同时也为单基站的建立和测试提供参考方法[1]。     

单基站CORS在矿山测量中的应用

露天矿山中需要进行工程控制测量、地形测量、土石方量测量、边坡稳定测量等工作,单基站CORS可以给测量工作带来很大的方便。论文介绍了单基站CORS的建设过程、坐标联测、精度等内容,并总结了单基站CORS在矿山测量中的应用。     

单基站差分GPS定位精度的分析与检验

分析了影响单基站差分GPS测量的主要误差因素,研究了不同基线长情况下广播星历、电离层和对流层延迟等误差对单基站差分GPS数据精度的影响程度及规律,通过设立双基站测量、与精密单点定位软件处理比较等方法检验了单基站差分GPS数据精度,得出了在用单基站差分GPS测量系统满足一定精度要求的结论。     

单基站CORS在电网GIS数据采集中的应用

国内CORS系统技术日趋成熟,单基站CORS系统以它自身的优势被广泛应用.以合肥市电网GIS数据采集项目为例,结合单基站CORS系统应用情况,探讨单基站CORS系统应用于电网GIS数据采集采用的测量方法和注意事项.通过分析单基站CORS系统的特点和应用情况,阐述单基站CORS系统应用于电网GIS数据采集的优缺点.     

单基站技术在松辽盆地区块物探测量中的应用

对单基站技术在松辽盆地区块物探测量中的实际应用,进行了总结,包括取得的经验及遇到的实际问题。单基站系统有着相当广泛的用途,作为传统RTK作业方式的替代技术,应用到物探测量领域,不仅节约了大量的人力、物力成本,而且大大提高了生产效率,已取得初步成果,供同行借鉴。     

单基站CORS-RTK在道路工程测量中的应用

相比较于常规RTK和多基站CORS及网络RTK,单基站CORS有其独特的优势。简述了单基站CORS的基本构成和原理及其优点和不足。以单基站CORS在某市政公路改扩建工程测量中应用为例,给出其在道路1:500数字带状地形图绘制和道路放样的测量结果及精度分析。实际应用表明,单基站CORS RTK可明显提高作业效率,能满足一定的精度要求。      

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.     

使用FME与VBA提取机场方格网高程数据

因受机场工程设计软件的测量数据容量限制,基于LiDAR采集、点云分类后得到的地面点云数据LAS不能完整应用于目前设计软件进行设计计算。本文通过对拟选技术方案的筛选,提出了利用FME Workbench数据处理功能,结合VBA编程获取外部方格网平面数据的方法。该方法在FME Workbench中实现了地面点云数据构建TIN、采用逐点内插方法从TIN中提取方格网高程数据、等高线生成及相应图形处理与成果输出。最终通过实际算例证明了该方法的有效性。     

“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。