降维思想在统计雷击大地密度中的应用  

Application of Dimension Reduction Concept in Computing Ground Flash Density

作　　者：朱传林[1,2] 王学良[1] 杨仲江[2] 李京校[3] 杨天琦[2] 

机构地区：[1]湖北省防雷中心,武汉430074 [2]南京信息工程大学大气物理学院,南京210044 [3]北京市气象局,北京100089

出　　处：《气象科技》2012年第5期839-842,共4页Meteorological Science and Technology

基　　金：湖北省气象局科技发展基金项目(2012Q02)资助

摘　　要：在统计雷击大地密度的过程中,需要划分公里网格,然后对落在网格内的闪电数据进行统计。首次提出利用降维思想统计雷击大地密度。利用统计出的数据绘制等值线时,每个数据都参与了等值线的绘制,不会出现丢失数据的现象。给出了手工统计的方法,同时利用Java语言编程实现了降维的统计方法,提供了友好的人机对话界面。实践证明,该统计方法具有很好的实用性。In the statistical process of ground flash density, the grids need to be divided in kilometer, and then the data of lightning flushes falling in the grids need be counted. The concept of dimension reduction is used to compute the ground flash density for the first time. I）uring the contour drawing, all the data are involved without missing data. The manual statistical method is described, and the statistical method of dimension reduction is achieved by using the Java language at the same time, which provides a friendly interactive interface. The application proved that the statistical method has a very good practicability.

关 键 词：降维思想 雷击大地密度 等值线 

分 类 号：TP309.3[自动化与计算机技术—计算机系统结构]