GPS-RTK技术在土地整理测绘中的应用探讨

在概述土地整理测绘的基础上,简单介绍了GPS-RTK技术的工作原理,以江西省大余县土地整理项目为例,对GPS-RTK技术在土地整理测绘中的应用进行了尝试和探讨,得出GPS-RTK技术完全可以应用于土地整理测绘。     

土地整理规划设计项目自动化处理的探讨

土地整理规划设计是土地管理工作的重要组成部分,而测绘是土地整理规划设计的重要工作。利用GIS技术开发土地整理规划设计软件,提高土地整理规划设计自动化处理水平,提升测绘在国土资源服务中的保障能力。     

全解析测绘技术在土地开发整理中的应用

近年来，随着社会经济发展，土地资源愈显稀缺而重要。土地开发整理作为补充耕地、集约挖潜的有效手段，在国土资源管理工作中越来越重要。全解析测绘技术的应用不仅为开发整理提供了强有力的技术保证，还大大提高了工作效率与水平。[第一段]     

土地开发垦造耕地项目的竣工测量

土地开发垦造耕地项目的竣工测量与一般的地形图测绘有着很大的区别．笔者根据省国土资源厅关于土地开发垦造耕地的有关文件精神并结合实践，从前期准备、竣工地形图测绘、配套设施测量、质量元素调查、面积认定、资料整理等六个方面对土地开发垦造耕地项目竣工测量的实施情况进行了简要描述。     

土地开发整理项目测绘问题探讨

土地开发整理规划项目中控制测量、地形图测绘、成果整理与普通工程测量基本相同,但由于应用的不同,对测绘成果,特别是地形图内容要求存在较大差别。就这些问题进行比较、探讨。     

以科学发展观为统领 推进国土资源事业发展

河北省唐山市丰南区国土资源局坚持以经济建设为中心,牢固树立科学的发展观,认真落实保护国土资源的基本国策,依法行政,在国土资源规划、管理、保护、开发和合理利用等方面取得了一定的成效,先后荣获省级耕地保护先进单位、行风建设先进单位、测绘执法先进单位,市级国土资源管理先进单位、土地开发整理先进单位、民主评议行风优胜单位等荣誉称号。在做好各项工作的基础上,丰南区局突出抓了土地开发整理和旧城改造两项工作。一、科学规划,严格管理,实行高标准土地开发整理项目丰南区局把土地开发整理工作当作服务经济的大事来抓,全年批准立项…     

关于土地开发项目的竣工测量

土地开发项目的竣工测量,是工程竣工验收中的重要手段,为竣工验收提供基础的数据支撑,与一般的地形图测绘有着很大的区别。笔者根据浙江省国土资源厅关于土地开发垦造耕地的有关文件精神,并结合几年来的外业实践,从前期准备、竣工地形图测绘、配套设施测量、质量元素调查、面积计算、资料整理等六个方面对土地开发项目的竣工测量的实施情况进行了简要阐述。     

基于GPS技术的基本农田土地整理测绘研究

介绍了土地整理测绘的特点和工作原理,探讨了GPS技术在枝江市基本农田土地整理测绘中的应用,验证了GPS技术在实际中的有效性和准确性.     

地籍测绘

地籍测绘是为获取地籍信息所进行的测绘工作.其基本内容是测定和表达土地及其附着物的位置、权属界线、面积等.地籍测绘的内容包括地籍控制测量、界址点坐标的测量、地籍图的测制、土地面积测算、地籍信息的动态监测和根据土地整理、开发与规划的要求,进行有关的地籍测绘工作.地籍测绘具有如下特征:     

市级土地整理测绘技术路线设计

土地整理测绘是一种同时具有地形测量、地籍测量、工程测量、土地利用调查等特点的专题测绘。这里就上海市市级土地整理测绘的技术路线、基本要求、基本内容以及上交资料内容作了比较全面的阐述。     

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。     

Monitoring drought dynamics in the Aravalli region (India) using different indices based on ground and remote sensing data

The hard-rock hilly Aravalli terrain of Rajasthan province of India suffers with frequent drought due to poor and delayed monsoon, abnormally high summer-temperature and insufficient water resources. In the present study, detailed analysis of meteorological and hydrological data of the Aravalli region has been carried out for the years 1984–2003. Standardised Precipitation Index (SPI) has been used to quantify the precipitation deficit. Standardised Water-Level Index (SWI) has been developed to assess ground-water recharge-deficit. Vegetative drought indices like Vegetation Condition Index (VCI) and Temperature Condition Index (TCI) and Vegetation Health Index (VHI) have been computed using NDVI values obtained from Global Vegetation Index (GVI) and thermal channel data of NOAA AVHRR satellite. Detailed analyses of spatial and temporal drought dynamics during monsoon and non-monsoon seasons have been carried out through drought index maps generated in Geographic Information Systems (GIS) environment. Analysis and interpretation of these maps reveal that negative SPI anomalies not always correspond to drought. In the Aravalli region, aquifer-stress shifts its position time to time, and in certain pockets it is more frequent. In comparison to hydrological stress, vegetative stress in the Aravalli region is found to be slower to begin but quicker to withdraw.     

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。     

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.     

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...     

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.     

自动车辆定位导航系统中传感器的误差分析

对国界定位导航系统中几种常见的辅助传感器所产生的误差进行了分析，导出了不同传感器的误差模型。这些误差模型是估计车辆位置的扩展卡尔曼滤波器的基础，同时也为选择适当的传感器提供了理论根据。