相关时延估计在宽带干涉仪闪电观测中的应用  

Application of correlation time delay estimation in broadband interferometer for lightning detection

作　　者：邱实[1] 杨波[1] 董万胜[2] 高太长[1] 

机构地区：[1]解放军理工大学,南京211101 [2]中国气象科学研究院雷电物理和防护试验室,北京100081

出　　处：《气象科学》2009年第1期92-96,共5页Journal of the Meteorological Sciences

基　　金：国家科技基础条件平台项目(2004DEA71070)

摘　　要：针对噪声对宽带干涉仪测角的干扰,提出了互相关测角算法。该方法避开频域分析,计算简单。通过仿真试验表明其抗干扰较强,具有一定的精度。通过本方法对人工引雷数据分析,能够明显定位直窜先导—继后回击过程,为宽带干涉仪测角提供了一个新思路。To solve the noise interference in angle measurement of broadband interferometer, a correlation angle measurement algorithm was proposed. This method avoided complex analysis in frequency domain, which was easy to realize. Simulation tests indicated that it had a good ability of anti-interference, as well as a moderate precision. Data from triggered lightning was also analysed , from which we can obviously locate the process of dart leader and subsequent return stroke . So it provided a new way for angle measurement for broadband interferometer.

关 键 词：雷电监测 宽带干涉仪 相关 

分 类 号：P427.3[天文地球—大气科学及气象学]