摘要
介绍了时间差法、干涉法闪电VHF电磁辐射源定位技术原理,以及不同技术的发展和应用,并对比分析了不同定位技术的优缺点:时差定位技术对孤立脉冲波形辐射定位效果较好,对持续时间较长的连续脉冲定位较难,且受地形影响较大;窄带干涉仪技术对孤立脉冲和连续脉冲均能很好定位,但不能很好地对同时发生的多个辐射源定位;宽带干涉仪系统可对同时发生的多个辐射源定位,但精度相对较低。
The lighting location technique principle of VHF electromagnetic radiation sources such as time difference method and interference method was recommended in this paper. As well as its develop- ment and application was introduced, moreover, the advantages and disadvantages of location technique were contrasted. The time difference location technique is best suited for the individual pulses waveform, but is not suited for the continuous signal with long duration, and is confined by the topography. The nar- rowband interferometers can locate individual and continuous pulses very well, but it is difficult for this technique to mapping multi-radiation sources occurred simultaneity. The broadband interferometers can locate multi-radiation sources appeared at the same time but have low precision.
出处
《气象与环境科学》
2008年第2期55-58,共4页
Meteorological and Environmental Sciences
关键词
辐射源
时间差法
干涉仪法
窄带干涉仪
宽带干涉仪
radiation source
time difference
interferometer
narrowband interferometer
broadband interferometer
