Research And Implementation Of Meteorological Satellite-based Internet / Intranet Information Retrieval Technology

The technic of information retrieval is being studied at first, then the solution of implement the Web Information Services System under UNIX and Windows NT network environment by various middleware are discussed. The main content of this treatise is to descript the detail solution of designing and implementing the national level Web retrieval system of data from meteorological satellite. This solution is based on the existing network environment , the software and hardware platform , and the Archive System construction of NSMC(National Satellite Meteorological Center), and is implemented by the three Layer System Structure Web Browser ,Web Server and Web Database. It also implemented and published the Internet/Intranet based catalogue retrieval vocational system of data from meteorological satellite. The retrieval system is being developed on HP_UX operation system. The Netscape Enterprise Server acts as its Web Server, the LiveWire of Netscape acts as its rniddleware, and Sybase acts as its DBMS (Database Management System). Furthermore, the breakthrough of the retrieval system is the key technology of visual retrieval with marking on the map. It allows us to make the retrieval condition by dragging the mouse on the map displayed on the user's screen. The retrieval system also implemented the functions of quick-view image browsing, catalogue retrieval and client-side manipulated animate of a series of images, etc.