土地开发整理辅助决策支持系统研究

介绍将信息技术特别是"3S"技术应用于土地开发整理工作的原理和实践.开发、利用各种信息技术,从不同深度、不同层次全方位地介入土地开发整理工作,使土地开发整理工作效率提高、规划科学、指标精确、方案优化、过程和成果规范,达到计算机辅助土地开发整理工作的目的.     

基于天地图移动API的“榆林旅游HD”项目开发

天地图与移动终端的结合是移动通信技术和Internet技术发展的必然,也是天地图网站推广应用的重要途径。介绍基于天地图移动API的"榆林旅游HD"的功能设计和开发流程,以及开发过程中的注意事项,可供天地图移动API开发项目参考和借鉴。     

日本“准天顶”卫星精度与美国GPS接近

9月11日,日本在种子岛宇宙中心使用H-2A火箭发射了首颗"准天顶"定位卫星"引路号",这是日本首次发射本国自主研发的导航定位卫星.按照计划,"引路号"试运行后如果不出现技术问题,日本将陆续发射另外两颗"准天顶"定位卫星. 日本的"准天项"卫星计划由来已久.2000年6月,日本宇宙开发委员会提交了一份题为《改进日本航天开发体制,扩展航天利用新领域》的报告,决定执行空间基础设施(I-SPACE)计划."准天顶"卫星系统正是"I-SPACE"计划要重点开发的三个系统之一.其目的是开发日本下一代自主导航定位系统,同时试验高速移动通信卫星.     

基于地理信息公共服务平台的应用开发研究与实践

"数字城市"地理空间框架建设的最主要任务之一就是构建权威的、唯一的、通用的城市地理信息公共服务平台,为广大用户提供一站式的综合在线地理信息服务。本文总结了"数字城市"地理信息公共服务平台中的几种应用开发模式,对平台应用开发中的关键技术GML、WMS、WFS、WCS、WMTS进行了研究,并基于平台利用关键技术开发了应用系统。     

基于“天地图·榆林”开发建设

近两年来,随着智能手机的迅猛发展,手机地图已经成为人们日常生活中很受欢迎的技术,采用图形及文字的展示方式实现定位,搜索,规划出行线路等功能。本文是以Android系统为基础,利用"天地图"移动API来实现"天地图·榆林"的功能设计和开发流程,为"天地图·榆林"市级节点的推广使用奠定了基础,也为今后"天地图"移动API的开发提供一定的参考和借鉴。     

故事教学法在GIS专业“面向对象程序设计与开发”课堂教学中的运用

针对"面向对象程序设计与开发"课程理论化和抽象性的特点,利用故事教学法可以再现或虚拟问题发生的情境、帮助学生在解决问题的过程中活化知识的优点,将广义的故事教学法引入程序设计与开发课程教学。在分析故事教学的内涵和优点的基础上,结合GIS专业"面向对象程序设计与开发"课程教学的实际需要,探讨了该课程关键知识点的故事设置方法,并对其实施过程及注意的问题进行了说明。     

基于C++的VCT 2.0文件格式检测程序的设计与实现

主要讨论"VCT 2.0文件格式检测软件"的实际设计开发过程,依据《城镇地籍数据库标准》和《土地利用数据库标准》中对VCT 2.0数据库文件的分隔符和拓扑关系等格式信息的相关定义,给出利用Visual C++开发"VCT 2.0文件格式检测程序"的具体做法和关键技术的实现。     

基于GIS空间分析的县域国土空间开发适宜性评价

基于三生空间开展国土空间开发适宜性评价,对于合理布局和有序开发国土空间、实现区域协调与可持续发展具有重要意义.以临泽县为例,利用GIS技术和"千层饼"模型,以5 m×5 m的格网大小为基本单元,开展基于三生空间的国土空间开发适宜性评价,多尺度定量揭示了临泽县国土空间开发适宜性状况.该方法可为县域单元国土空间规划方案的优化配置与有序开发提供决策参考和数据支撑.     

今日资讯

数字97个山东省按照"禁采区关停、限采区收缩、开采区聚集"的原则,合理调整开采布局,严格控制矿山规模,全力推进矿产资源开发整合。目前,已有97个重点矿区完成资源开发整合任务。     

国土空间开发及格局优化研究:现状述评、战略方向、技术路径与总体框架

研究目的:国土空间开发是国家发展战略的基础和重要组成部分,优化国土空间开发格局、统筹协调生产、生活、生态——"三生"空间配置,是未来20年我国实现可持续发展的重点任务和根本途径。研究方法:文献梳理、理论分析与顶层设计。研究结果与结论:1国土空间优化开发研究方兴未艾,在多元数据融合、空间格局时空变化模拟预测、空间开发格局评价、优化格局评判模式和标准等方面潜力很大;2未来20年,我国应围绕大力推进生态文明建设,通过实施"点、线(轴)、面"有机结合的多中心网络式、功能差别化的国土空间优化开发战略,构建安全、和谐、开放、富有竞争力和可持续发展的美丽国土新格局;3国土空间优化开发研究,应重点开展国土空间开发时空格局的关系耦合与预测、情景模拟与优化,完善政策建议,形成国土空间开发优化模式并开展应用示范,对未来国土空间开发进行引导和管控,指导基于空间格局的区域和省级国土规划的编制和实施。     

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.     

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.     

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。     

地理数据库的关系模型及其实现

本文从以图论观点分析地理实体入手,系统阐述了地理数据库关系模型的设计法和过程。作者于1984年4～9月间在微型机上设计建立了关系型地理数据库的实方验系统(RGDB)。该系统采用了本文提出的关系模型,采用了可动态扩库的子库组合结构,这种结构具有灵活性和提高空间利用率的优点。RGDB含有多种功能的数据操作命令,除了具有一般检索功能外,还能进行“开窗”选取和十分“自由”的映象选取。本文对RGDB系统的主要性能和实现途径作了扼要介绍。