Probabilistic Hough Transform
Probabilistic Hough Transform
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发表时间：
2011
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通讯作者：
Shen Faxin;Guannan Gao;Wang Min
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文献类型：
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作者：
Shen Faxin;Guannan Gao;Wang Min
耀斑和日冕物质抛射过程中产生的非热高能粒子流和激波是造成灾难性空间天气事件的两个主要因素。它们的主要观测特征是频率漂移快的Ⅲ型射电暴和频率漂移相对慢的Ⅱ型射电暴。本文主要介绍了利用概率霍夫变换自动识别观测数据中Ⅲ型和Ⅱ型太阳射电暴的方法，并提取了Ⅲ型和Ⅱ型射电暴的特征参数，最后利用识别出的II型射电暴的物理参数估计了CME冲击波的速度。
: Nonthermal energetic particle flow and shock wave generated during flares and coronal mass ejection are the two main factors that produce disastrous space weather events. Their main observational characteristics are type Ⅲ radio burst with fast frequency drift feature and type Ⅱ radio burst with relatively slow frequency drift feature. This paper mainly introduces the method of using the probabilistic Hough transform to automatically identify the type Ⅲ and type Ⅱ solar radio burst in the observation data, and to extract the characteristic parameters of the type Ⅲ and type Ⅱ radio burst, finally the velocity of the CME shock wave is estimated by using the physical parameters of the identified radio type II bursts.