Use of Service Middleware Based on ECHO with CSW for Discovery and Registry of MODIS Data

作     者：CHEN Zeqiang CHEN Nengcheng 

作者机构：State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University 129Luoyu Road Wuhan 430079 China 

出 版 物：《Geo-Spatial Information Science》 (地球空间信息科学学报（英文）)

年 卷 期：2010年第13卷第3期

页      面：191-200页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081603[工学-地图制图学与地理信息工程] 081802[工学-地球探测与信息技术] 07[理学] 08[工学] 070503[理学-地图学与地理信息系统] 0818[工学-地质资源与地质工程] 0705[理学-地理学] 081602[工学-摄影测量与遥感] 0816[工学-测绘科学与技术] 

基　　金：Supported by the National 863 Program of China (No. 2007AA12Z230) the National Natural Science Foundation of China (No. 40721001) the IPV6 Program (No.126) the Shenzhen Program (No. SY200806260042A, No. CXB200903090023A) 

主　　题：ECHO GeoNetwork ISO19139 model mapping metadata transform metadata register 

摘      要：Nowadays, NASA is producing several terabytes Moderate Resolution Imaging Spectroradiometer （MODIS） data everyday; how to find the data with criteria, such as specific times, locations, and scales using an international standard becomes more and more important. In this paper, a service-oriented architecture for use of the integration Earth Observation System Clearing- HOuse （ECHO） with the Open Geospatial Consortium （OGC） Catalogue Service--Web profile （CSW） is put forward. The architecture consists of three roles： a service requester （the user）, a service provider （the ECHO metadata server）, and a service broker （the GeoNetwork CSW and MODIS registry service middleware）. The core component-MODIS registry service middleware includes three components： metadata fetcher, metadata transformer, and metadata register. The metadata fetcher is used to fetch metadata from ECHO metadata server; the metadata transformer is responsible for transform metadata from one form to another; the metadata register is in charge of registering ISO19139-based metadata to CSW. A prototype system is designed and implemented by using the service middleware technology and a standard interface and protocol. The feasibility and the response time of registry and retrieval of MODIS data are evaluated by means of a realistic LPDAAC_ECS MODIS data center. The implementation of this prototype system and the experiment show that the architecture and method is feasible and effective.