利用Google Earth解决控制测量生产中大数据量影像带来的难题

探讨了利用Google Earth辅助进行像片控制测量控制点布设的优点,介绍了利用Google Earth进行像控点布设的方法和作业流程。     

基于AJAX和Google Maps API的WebGIS开发研究

通过介绍AJAX技术的相关原理、Google Maps地图服务及其应用程序接口Google Maps API,提出了基于AJAX及Google Maps平台的WebGIS开发新技术。通过构建发布气象信息的WebGIS实例,探索在Google Maps平台上利用AJAX通过XMLHttpRequest对象异步调用XML数据实现动态加载地理信息和气象信息的关键步骤。研究结果表明,WebGIS实现的新模式,能够较好地解决传统WebGIS的固有缺点,如加快了响应速度、增强了用户体验和方便了服务扩充等。     

Google Earth在道路工程前期规划设计中的应用研究

Google Earth数据具备免费、直观、时效性强等特点,在道路工程设计中具有巨大的应用前景。本文以乌拉泊饮水源保护工程吐乌大高速公路段项目为例,提取项目区Google Earth最新卫星影像图和高程点数据,通过ArcGIS地统计学工具和Sufer克里金差值法进行项目区前期设计分析,获得最优路线和蓄水池的设置点,从而使前期项目设计节约劳动时间,降低劳动强度,提高工作效率。具有较强的实用性和可操作性。     

基于Google Map API的天气实况显示系统

谷歌地图应用程序开发包提供了各种向地图添加内容的服务,用户能够在网站上创建功能全面的地图应用程序。利用Google Maps API和Ajax技术,建立了气温、湿度等天气实况信息在Google Map中快速显示的WebGIS系统。实践证明,该方法提高了系统的开发速度,缩短了开发周期,优化了人机交互。     

大连市旅游信息系统设计与开发

基于Google Maps API所提供的接口,把Google地图嵌入到自己的网页中,利用API提供的函数导入所需要的电子地图,实现了地图浏览和旅游信息显示等基本内容,并完成在电子地图上对旅游景点、旅游线路、旅游景区等信息的标注,使游客能够方便快捷地获取旅游景点及附近信息,从而合理安排旅游计划。     

全球尺度下遥感与地理信息系统一体化软件平台研建进展

地理信息科学与技术在全球变化和地球系统科学研究中,正发挥越来越重要的作用。而在全球尺度下开展分析,必须发展用基于3维坐标进行分析,而且要具备全球尺度上的地表信息提取能力。并支持全球尺度的空间分析与应用的软件。介绍了在Google Earth基础上,开发的遥感和地理信息系统一体化软件平台：全球制图者（Global Mapper,GM）和全球分析者（Global Analyst,GA）。该平台除具备GE强大的空间数据浏览功能之外,还建立了全球地表信息采集与管理、建库与地图叠加、全球图像处理、可视化展示与球面空间分析等技术。该软件突破了传统的2维坐标分析,改变了数据获取和数据管理的方式方法,将在地球系统科学与全球变化研究中发挥重要作用。     

基于ArcGIS Server和ArcGlobe的网络虚拟校园研究

虚拟现实技术是一门新兴的技术,虚拟校园是其在数字化校园中的具体应用.本文以西南交通大学犀浦校区为例,探讨了基于ArcGIS Server和ArcGlobe的网络虚拟校园场景建模方法,然后使用ArcGIS Server进行了发布.用户通过网络可以可视化浏览与探索虚拟校园场景,为虚拟校园地建设和发布提供了新的思路.     

Impact of Conjugated Shear Joint of “X” Type on Macroscopic Karstification on the Basis of the Analysis of Google Earth Images

As viewed from space remote-sensing images (e.g. Google Earth images) of South Guizhou and North Guangxi, the authors found that macroscopic karst landscape on the Earth’s surface is strongly controlled by the Conjugated shear joint of “X” type. Joints of this kind constitute a huge infiltration network and act as channel-ways for the permeation of meteoric waters from the surface, thus, leading to the dissolution of carbonate rocks nearby. As a result, the karst landscape is formed, which is dominated by linear karst valleys. An “X” karst valley network structure appears in the area where horizontal strata are distributed, and a feather-like network structure appears in the area where vertical strata are distributed, respectively. When the water permeates downwards to the underground-water level, it will flow horizontally along the strike of “X” joints toward the local base level of erosion to form an “X” network system of underground conduits in the area where horizontal strata are distributed, but it is relatively complex, because of the joining of other joints. This is the first time we have made use of Google Earth images to study the karst environment. Therefore, it has been successful in research on the Earth’s geomorphology, which could only rely on aerial photos and satellite photos in the past. Google Earth images provide low-cost and applicable imaging materials for the study of Earth’s geomorphology and karst rocky desertification and its control.     

An Investigation of the Use of Real-Time,Authentic Geospatial Data in the K–12 Classroom

Abstract

This article situates geospatial technologies as a constructivist tool in the K-12 classroom and examines student experiences with real-time authentic geospatial data provided through a hybrid adventure learning environment. Qualitative data from seven student focus groups demonstrate the effectiveness of using real-time authentic data, peer collaboration, and geospatial technologies in learning geography. We conclude with recommendations about geospatial technology curricula, geospatial lesson design, providing preservice teachers with geographic technological pedagogical content knowledge, and encouraging further research to investigate the impact, affordances, and pedagogical implications of geospatial technologies and data in the K–12 classroom.