第20卷第7期 2012年7月
文章编号
1004-924X(2012)07-1587-08
光学精密工程
Optics and Precision Engineering
气象卫星闪电识别系统的设计与实现
周严1，田茂1，张青林1*，陈曦？，熊激云1
Vol.20No.7
Jul.2012
（1，武汉大学电子信息学院，湖北武汉430072；2.武汉大学微电子研究院，湖北武汉430072）
摘要：设计了一种能够完成赖-赖背景去除算法的闪电识别系统，用于实时识别闪电事件并编码。该系统将闪电成像仪拍摄到的高速图像数据分成8个区域，用8个相同的子系统分别完成各个区域的闪电探操测；在每个子系统中利用7片静态随机存储器(SRAM)以流水读写的方式完成7顿背录评估，并利用该方法实现7赖数据的赖-赖背景去除算法。实验结果显示，该系统可以完成2.88Gbps高速数据流的接收，背景信号评估和去除，并且可实时识别闪电事件。这些结果表明该系统能够完成气象卫星闪电识别的任务。
关键调：闪电探测；闪电识别；闪电事件；背景存储；静态随机存储器
中图分类号：TP391；P414.4
文献标识码：A
doi;10, 3788/OPE. 20122007,1587
Designandimplementationoflightningidentificationsystem
on meteorological satellite
ZHOUYan'，TIANMao',ZHANGQing-lin'',CHENXi?,XIONGShu-yun(1.SchoolofElectronicInformation,WuhanUniversity,Wuhan430072,China
2.InstituteofMicroelectronicsand InformationTechnology,
WuhanUniversity,Wuhan430072,China)
+Correspondingauthor，E-mail:zhang_qinglin83@yahoo.com.cn
Abstract: A lightning identification system that can realize frame-frame background removal algorithm is designed to accomplish the lightning identification and coding in real-time on a meteorological satel-lite. This system divides the high-speed image captured by a lightning imaging sensor into eight re gions, and the lightning detection of each region is completed by an identical subsystem respectively. Each subsystem uses seven Static Random Access Memories(SRAMs) to read and write data in the pipelined architecture to implement the background evaluation and realize frame-frame background re moval algorithm. Experimental results show that this system can receive high-speed data flow up to 2. 88 Gbps, realize background signal evaluation and removal, and identify lightning events in real-time. These results show this system is able to identify the lightning on meteorology satellites.
Key words: lightning detection; lightning identification; lightning event; background storage; Static
Random Access Memories(SRAM)
收稿日期：2012-01-17；修订日期：2012-03-14.
基金项目：国家自然科学基金资助项目（No，61072135)