基于MapInfo的城市3维可视化GIS

介绍了在以ＶｉｓｕａｌＣ＾＋＋５．０ｆｏｒ ｉｎｄｏｗｓ ９５／ＮＴ及图形库ＯｐｅｎＧＬ开发的城市景观３维可视化系统（ＶＣＭ＆Ｖ）发过程中,以对象链结和嵌入（ＯＬＥ）技术在可视化界面上实现了ＧＩＳ软件ＭａｐＩｎｆｏ的交互查询功能,大大增强了城市ＧＩＳ的３维可视化功能。     

地理信息系统与地图学教育

本文在简明扼要地叙述地理信息系统（ＧＩＳ）及地理信息系统教育的发展特点,系统全面地分析ＧＩＳ与地图学、地图可视化与ＧＩＳ可视化的密切关系的基础上,就新时期的地图学教育,在师资人员培养、课程设置、教学内容选择、教学实验方法等方面进行了探讨。     

JAVA—GIS软件开发的新工具

Ｉｎｔｅｒｎｅｔ的迅速发展和ＷＷＷ的面世给传统的ＧＩＳ软件开发提出了新的挑战,本文通过对Ｊａｖａ特点的阐述,论述了Ｊａｖａ成为ＧＩＳ软件开发的新工具的可能性和必然性,笔者认为在不久的将来,Ｊａｖａｓ必将取代Ｖｉｓｕａｌ Ｂａｓｉｃ和ＶｉｓｕａｌＣ＋＋成为ＧＩＳ软件开发的新工具。     

ＧＩＳ应用所面临的若干问题讨论

计算机技术的迅速发展，使得ＧＩＳ的功能、特点也随之而发生变化，尤其是近几年计算机大容量存贮介质、多媒体技术、可视化技术等被引进ＧＩＳ中，已使传统的地图学理论发生了新的变化。     

城市景观实时三维动画的实现

在以Ｖｉｓｕａｌ Ｃ＾＋＋５．０ｆｏｒ Ｗｉｎｄｏｗｓ９５／ＮＴ及图形库ＯｐｅｎＧＬ开发的“城市景观三维可视化系统”地过程中,进一步研究了建筑物表面纹理泊恢复及三维可视化窗口中的快速显示,其基本思想和设计方法可为新一代国产ＧＩＳ软件的研制提供借鉴。     

扫描矢量化在GIS和地图数字化中的应用研究

作者曾经利用扫描矢量化软件Ｉ／ＲＡＳＢ和Ｉ／ＧＥＯＶＥＣ在ＧＩＳ和数字地图中进行了各种各样的应用研究。本文着重介绍Ｉ／ＲＡＳＢ和Ｉ／ＧＥＯＶＥＣ等在ＧＩＳ和地图数字化中的应用方法，包括矢量文件和光栅文件。     

我国地图学与GIS的新发展

我国地图学与ＧＩＳ的新发展张清浦（中国测绘科学研究院）９０年代以来，我国地图学与地理信息产业发展迅速，新图种、新系统、新技术和新方法层出不穷，呈现出蓬勃发展的喜人形势，受到国际同行专家的高度重视。我国地图学和ＧＩＳ的研究和应用已开始步人世界先进行列，...     

可视化编程与数字地图制图

自本世纪 6 0年代世界上第一台计算机制图系统诞生以来 ,数字地图制图已经走过了三十多年的历程。其理论、技术、设备和应用都发生了深刻的变化。如今它的主要领域包括 :ＭＤＢＳ研究与实用ＭＤＢＳ的建立 ;ＧＩＳ、ＧＰＳ与ＲＳ的集成 ;建立全自动化的地图生成系统 ,提高地图生产效率 ;虚拟现实技术及其应用研究等等。无论上述哪个研究领域都有一个地理信息可视化的问题。可视化 ,也称作科学计算可视化 (ＶｉｓｕａｌｉｚａｔｉｏｎｉｎＳｃｉｅｎｔｉｆｉｃａｌＣｏｍ ｐｕｔｅｒ) ,其定义为 :“可视化是一种计算方法 ,它将符号或数据转换…     

利用高级语言＋OCX数字制图控件开发中小型GIS软件

本语文交接停顿同用于数字地图应用软件开发的嵌入式ＯＣＸ控件ＭａｐＯｂｊｅｃｔｓ与微软公司（ＭｉｃｒｏＳｏｆｔ）的高级语言Ｖｉｓｕａｌ Ｒａｓｉｃ相结合,来开发满足各种不同用户需求的中小型ＧＩＳ软件,作者在南京市分层分户图形编辑与管理系统的开发中应用此方法,并获得成功。     

数字地图制图向地理信息系统发的若干问题分析

一、引　言数字地图制图与地理信息系统 (ＧＩＳ)都以空间地理信息的存取、处理、分析与表达为研究对象 ,是地图学在数字信息时代的发展与延续。但相比而言 ,数字地图制图强调空间地理信息的传输和表达 ,而ＧＩＳ则以空间地理信息的处理与分析为主 ,从应用的角度看 ,ＧＩＳ无疑具有更广阔的发展空间。数字地图制图必须在现有技术发展的基础上加强空间 (地图 )分析功能 ,即在保持地图表达的模拟性、艺术性的基础上向ＧＩＳ发展转化 ,才能够一方面提高ＧＩＳ的可视化表达质量 ,另一方面深化数字地图制图的应用层次 ,拓展其应用范围。但到目前…     

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。