雷达目标全姿态RCS数据库设计与检索方法  

Design and retrieval method for all-attitude RCS database of radar target

作　　者：阳召成[1] 聂镭[1] 黎湘[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院空间电子信息技术研究所,长沙410073

出　　处：《计算机应用研究》2009年第10期3843-3845,3848,共4页Application Research of Computers

摘　　要：由于雷达目标全姿态RCS数据动辄拥有108条记录,对如此庞大的数据集进行的存储与检索操作常常是系统性能的瓶颈,其效率决定着算法的可行性。针对该问题,对传统的目标全姿态RCS数据库设计方案加以改进,提出了一种更加高效的存储机制;在此基础上,提出了基于数组的雷达目标全姿态RCS数据库检索方法。它利用了Oracle DBMS的强大管理功能和内存缓冲的高效检索,通过结构化数组下标计算对应到内存缓冲区中的预期偏移量,省略了反复的数据查表工作。实验效率分析表明,新方法对于数据存储和检索效率均有显著提升。The number of all-attitude RCS data of radar target is easy to achieve 10s. It＇ s often a bottleneck of system performance for the access and retrieval over such a large set of data, furthermore, the efficiency directly determines the feasibility of algorithms. Through improving the traditional design for all-attitude RCS database, this paper put forward a more feasible and high efficiency access scheme. Besides, also applied a retrieval method based on array for all-attitude RCS database, which took advantage of the powerful management functions of Oracle DBMS, as well as the high efficiency of data retrieval from main memory buffer. Then, replaced the repeated table lookup by calculating the structural array＇ s subscript corresponding to the anticipative offset of main memory buffer. The experiments indicate that this new method makes an advance on the database access scheme and retrieval efficiency.

关 键 词：全姿态RCS数据库 检索 数组 数据库设计 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]