Development for distributed precipitation radar database and its application.

使用JAVA编程语言开发了分布式降水雷达数据库。建立降水雷达档案我们收集了日本建设省安装的九州南部雷达1982年至1985年、1993年和1997年的雷达资料。同时还收集了日本气象厅安装的AMEDAS雨量计观测资料。所有采集的数据都用光盘保存，并用Java建立数据库。这个数据库可以通过互联网检索数据。该数据库的URL为http：//www.radar.ciil.ac/2)。检索系统的开发。我们制作了一个数据库检索系统。该程序可以作为Applet使用，通过Internet从数据库服务器获取降水数据。翻译系统的开发我们制作了一些翻译程序。这些程序将雷达记录的原始雷达数据转换为通用的雷达格式。隐蔽式雷达是Mt.沙卡山Oowa，Mt.库尼米和中央大学的多普勒雷达。阿梅达斯数据库和地理信息系统数据库的开发我们建立了阿梅达斯降水数据库用于定标，建立了用于雷达数据库地图显示的地理信息系统数据库。分布式系统的开发我们构建了三台双CPU服务器，均为Linux操作系统。这些服务器将安装在三所大学，并在分布式系统中工作。关键技术是HORB，它可以通过互联网将三台服务器作为一个大型数据库服务器工作。

We devlope the distributed precipitation radar database using Java programming language.1). Make an archive of precipitation radarWe collect the radar data from 1982 to 1985, 1993 and 1997 observed with Kyushu Nanbu radar installed by Ministry of Constrution, Japan. We also collect the rain gauge data during the same time observed with AMEDAS installed by Japan Meteology Agency. All collected data are saved with CD-ROM and made an database using java. This database is possible to search the data through the Internet. The URL of the database is http : //www.radar.civil.ac/2). Developement of the Search system.We made a search system for the database. This program is possble to use as applet and get the precipitation data from the database server through the Internet.3). Developement of the translation systemWe made some translation programs. These program translate a raw radar data which recorded by the radars to a common radar format. Covered radars are Mt. Shaka, Mt. Oowa, Mt. Kunimi and Chuo University Doppler radar.4). Developement of the Amedas and GIS databaseWe made a Amedas precipitation database for calibration and GIS database for diplay the map for radar database.5). Developement of the distributed systemWe build three dual CPU servers which is Linux OS system. These servers will be install at three university and work for distributed system. Key technology is HORB.This can works three servers as one big database server through Internet.