基于开源WebGIS的遥感数据共享方法研究  

Remote Sensing Data Sharing Method Based on Open Source WebGIS

作　　者：郑逢斌[1] 元沐南[1,2] 王栋[2] 周珂[2] 段胜强 张振鹏[1,2] 

机构地区：[1]河南大学计算机与信息工程学院,河南开封475004 [2]中国科学院遥感与数字地球研究所,北京100101

出　　处：《河南大学学报（自然科学版）》2016年第4期438-446,共9页Journal of Henan University:Natural Science

基　　金：高分重大专项项目(30-Y30B13-9003-14/16);中科院遥感所"一三五规划"项目(Y3SG100CX);中科院遥感所自研项目(Y4SF010030)

摘　　要：我国遥感数据应用产业飞速发展,对日益增长的海量遥感数据进行高效组织和共享具有重大意义.针对遥感数据共享服务的特点及传统共享方式的不足,通过分析整合OpenLayers、GeoServer、PostGIS等多种开源技术,提出一种基于开源WebGIS的遥感数据共享服务系统三层结构;在实现系统结构的基础上,针对遥感数据的地理特征,设计一种可将遥感数据以缩略图形式在网页地图上叠加并可以随地图进行缩放交互的在线预览方法,使用户能更直观有效地对海量遥感数据进行可视化检索.通过对系统结构及数据预览方法的研究、实现与分析,证明开源WebGIS技术在遥感数据应用中具有可行性和适用性,为降低遥感数据共享服务系统的开发复杂度和成本,提高遥感数据的共享效率和质量提供一种新的解决方案.This paper studied the application of open source WebGIS technology in remote sensing data sharing services. With the rapid development of remote sensing data applications industry, it is significant to efficiently organize and share the massively growing remote sensing data, which has become an important source of the development of technology and economic. For characteristics of remote sensing data sharing services and defects of the traditional sharing methods, the paper proposed a system based on open source WebGIS by analyzing and integrating a variety of open source technologies such as OpenLayers, GeoServer and PostGIS. This system had a three-layer structure of data, logical and presentation, of which the data layer provided maps, spatial information services and remote sensing data files; the logic layer was responsible for the integration of various different data services and complete system operation processing; the presentation layer was responsible for the user visual interaction, receiving online operation instructions, and showing the processing results of the remote sensing data. Based on the implementation of the system structure and taken the geographical characteristics of remote sensing data into account, the paper designed an online data previewed method, which could superimpose thumbnails of remote sensing data on the corresponding location of the web map. In this way, users can draw some shape such as a rectangle or other polygons on the map page to select the range of interest to search the remote sensing data, and search results would be marked on the background map according to the actual latitude and longitude coordinates information. When user previews the data on web map page and slide the mouse wheel, the data thumbnail will follow the map to zoom in or zoom out. Through researching, implementing and analyzing the system structure and the data preview method, the paper proved that open source WebGIS technologies had feasibility and applicability in the application of remote sensing

关 键 词：遥感数据 开源 WEBGIS OPENLAYERS 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]