数字天气雷达虚拟终端的硬件和软件设计  

The Development of Software and Hardware for Digital Weather Radar Virtual Termination

作　　者：赵坤[1] 陈建军[2] 方德贤[1] 葛文忠[1] 慕熙昱[1] 

机构地区：[1]南京大学大气科学系教育部国家中尺度灾害性天气重点实验室,江苏南京210093 [2]中国船舶重工集团公司第七二四研究所,江苏南京210003

出　　处：《高原气象》2006年第2期335-343,共9页Plateau Meteorology

基　　金：国家自然科学基金项目"登陆台风降雨和环流结构变化之多普勒雷达分析"(40505004)资助

摘　　要：设计了一套基于PC机的数字天气雷达虚拟终端系统,用普通的PC机代替传统数字天气雷达信号处理分机[1,2]直接完成雷达信号处理和实时显示。该系统在硬件方面,设计了基于PCI总线的三通道高速数据接收卡,以满足大容量数据高速传输要求;在软件方面则利用高级语言(C++)和虚拟设备驱动程序(WDM)技术开发了一套基于WINDOWS2000/9X操作系统的实时处理软件,以此控制数据接收卡和雷达工作,并完成信号处理和实时显示。实际应用表明,该系统结构简单、界面友好、操作方便、便于升级,完全能够实时、高效地处理常规天气雷达信号,而且处理后的雷达回波层次清楚,具有较高精度。本研究也为虚拟终端应用到多普勒天气雷达打下了一个良好的基础。The digital weather radar virtual termination system based on PC machine is designed to perform radar signal processing and displaying real-timely instead of traditional radar signal processing machine. In the aspect of the system hardware, we design a three-channel PCI-bus based signal receiving card to satisfy the requirement of mass and high speed data transfer. While in the aspect of the system software, using advanced language （C＋ ＋） and WDM technology, a real-time processing software system - worked on WINDOWS2000/9X operational system is designed to control the work mode of signal receiving card and radar, and perform radar signal processing and displaying real-timely. The experimental results show the virtual termination system characterized by simply structure, friendly user interface, convenient operation and easy update is able to process the signal of conventional radar effectively and real-timely. What＇s more, the processed echo has better quality and smaller fluctuation. This research is a preliminary step towards the application of digital weather radar virtual termination system in Doppler radar.

关 键 词：虚拟终端 PC机 信号处理 

分 类 号：TN957.529[电子电信—信号与信息处理]