| 太阳射电频谱图的自动轮廓检测与信息提取 |
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| 引用本文： | 张岩,颜毅华,谭程明,赵翠.太阳射电频谱图的自动轮廓检测与信息提取[J].现代电子技术,2011,34(2):71-74. |
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| 作者姓名： | 张岩 颜毅华 谭程明 赵翠 |
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| 作者单位： | 1. 中国科学院研究生院,北京,100049;中国科学院国家天文台,北京,100012;中国科学院太阳活动重点实验室,北京,100012
2. 中国科学院国家天文台,北京,100012;中国科学院太阳活动重点实验室,北京,100012 |
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| 基金项目： | 国家重大科研装备研制项目 |
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| 摘 要： | 射电精细结构是太阳爆发动态频谱图中一个重要的观测现象。为了达到更好提取精细结构轮廓，解读物理信息的目的。基于国家天文台怀柔观测站的2．6～3．8GHz频谱仪于2002年4月21日观测到的爆发现象，采用Levelset方法并加以改进，对原始图像进行轮廓提取，克服了以往此方法中存在遗漏检测的问题。此外对图像进行循环检测，取得了良好地检测结果。此后又对图像进行二值化提取，得到了二值化精细结构图像。最终统计出精细结构漂移率这一重要物理信息，为更好的理解太阳爆发机制提供了依据。
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| 关 键 词： | 射电精细结构 频谱图 Level set 二值化图像 |
Automatic Contour Detection and Information Extraction of Solar Radio Frequency Spectrogram |
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| ZHANG Yan,YAN Yi-hua,TAN Cheng-ming,ZHAO Cui.Automatic Contour Detection and Information Extraction of Solar Radio Frequency Spectrogram[J].Modern Electronic Technique,2011,34(2):71-74. |
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| Authors: | ZHANG Yan YAN Yi-hua TAN Cheng-ming ZHAO Cui |
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| Affiliation: | 1,2,3(1.Graduate University of Chinese Academy of Sciences,Beijing 100049,China;2.National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China;3.Key Laboratory of Solar Activity,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China) |
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| Abstract: | Radio spectral fine structure is an important observation phenomenon in the dynamic frequency spectrogram of solar radio burst. The data are applied with 2, 6-3, 8 GHz spectrum analyzer at the Huairou observatory on 21, Aprial 2002. The contour of radio spectral fine structure is detected by Level set. The level set is improved, and the missing of detection is solved. And then, the original image is changed into the binary image. The drift rates of radio spectral fine structure can be counted. The drift rates are very important, which provide valuable evidences to understand solar radio burst. |
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| Keywords: | Level set |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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