海洋声速剖面数据库的快速存取技术研究

Research On Fast Access Technique of Sound Speed Profile Database

海洋中声信号的传播受声速剖面的影响,而声速剖面往往是通过数据库的形式来获取的;从SQL Server等第三方数据库软件无法满足实时性要求出发,研究了声速剖面数据的特点以及使用的特点,以此为基础建立了新的数据文件格式并设计了存取接口;经测试,应用新格式生成的数据文件体积大幅度缩小,存取速度大幅度提升。

Acoustic signal propagation in sea was influenced by sound speed profile, which was usually obtained from database. Since third party database software, like SQL Server, can not meet the specification of real-time, new data format of database files was designed, so was the access interface. The new format was created based on the feature of sound speed profile data itself and the characteristics of utilizing it. Test result shows that the size of data files is sharply decreased and the access speed is greatly increased.