本文關(guān)鍵詞：基于OpenGIS WMS的空間信息搜索引擎系統(tǒng)原型，由筆耕文化傳播整理發(fā)布。

基于OpenGIS WMS的空間信息搜索引擎系統(tǒng)原型

白玉琪,楊崇俊,劉冬林,朱華吉,盧亞輝,芮小平(中國科學(xué)院遙感應(yīng)用研究所，北京 100101)

摘 要

面向在線空間信息的搜索引擎是空間信息共享和互操作領(lǐng)域一個新的研究內(nèi)容，，為了幫助用戶能夠自動地找到感興趣的空間信息，提出了一種遵循OpenGIS WMS規(guī)范構(gòu)建的空間信息搜索引擎系統(tǒng)原型，并詳細(xì)介紹了研究背景、設(shè)計方案、系統(tǒng)實現(xiàn)以及性能測試結(jié)論。實踐證明，該搜索引擎不僅能自動地搜索互聯(lián)網(wǎng)上的WMS服務(wù)器，并能不斷更新和維護(hù)相關(guān)的WMS信息數(shù)據(jù)庫，還能根據(jù)用戶的查詢需求實現(xiàn)動態(tài)的服務(wù)連接和透明的空間信息獲取。

關(guān)鍵詞

空間信息  網(wǎng)絡(luò)搜索引擎  網(wǎng)絡(luò)制圖  開放式地理信息系統(tǒng)  網(wǎng)絡(luò)地圖服務(wù)  互聯(lián)網(wǎng)制圖技術(shù)

OpenGIS WMS Based Prototype of Spatial Information Search Engine

BAI Yu-qi,YANG Chong-jun,LIU Dong-lin,ZHU Hua-ji,LU Ya-hui,RUI Xiao-ping,BAI Yu-qi,YANG Chong-jun,LIU Dong-lin,ZHU Hua-ji,LU Ya-hui,RUI Xiao-ping,BAI Yu-qi,YANG Chong-jun,LIU Dong-lin,ZHU Hua-ji,LU Ya-hui,RUI Xiao-ping,BAI Yu-qi,YANG Chong-jun,LIU Dong-lin,ZHU Hua-ji,LU Ya-hui,RUI Xiao-ping,BAI Yu-qi,YANG Chong-jun,LIU Dong-lin,ZHU Hua-ji,LU Ya-hui,RUI Xiao-ping,BAI Yu-qi,YANG Chong-jun,LIU Dong-lin,ZHU Hua-ji,LU Ya-hui,RUI Xiao-ping()

Abstract

Spatial Information Search Engine (SISE), aiming to search the World Wide Web for online geographic information to meet the end users needs, is totally a new research area in the field of spatial information sharing and geographical information system interoperability. In this paper we propose a prototype system of SISE based on the OpenGIS WMS specification. The system architecture, working principles, detailed function of each component, implementation strategies and system performance test results of this SISE prototype are introduced. This SISE prototype is capable of discovering available WMS Servers dynamically, saving and updating capabilities information of them into relational databases and maintaining necessary R tree indexes. For each spatial information request from clients, it can choose qualified WMS servers according to the request autonomously and fetching the matched geographical information for them from remote WMS servers transparently.

Keywords

Spatial information  Search engine  Web Mapping  OpenGIS  Web Map Service

  本文關(guān)鍵詞：基于OpenGIS WMS的空間信息搜索引擎系統(tǒng)原型，由筆耕文化傳播整理發(fā)布。