电子学报 ›› 2018, Vol. 46 ›› Issue (3): 575-581.DOI: 10.3969/j.issn.0372-2112.2018.03.009

• 学术论文 • 上一篇    下一篇

基于数据预处理的电离层剖面反演方法

鲁转侠, 柳文, 蔚娜, 娄鹏   

  1. 中国电波传播研究所, 山东青岛 266107
  • 收稿日期:2016-01-26 修回日期:2017-09-26 出版日期:2018-03-25
    • 作者简介:
    • 鲁转侠,女,1978出生,陕西人,高级工程师,主要研究方向为电离层回波信号处理、模式识别及传播特性分析.E-mail:zhuanxialu@163.com;柳文,男,1973年出生,研究员,主要研究方向为电离层物理及电波传播;蔚娜,女,1981年出生,山东人,高级工程师,主要研究方向为雷达信号处理和电波传播;娄鹏,男,1982年出生,河南人,高级工程师,主要研究方向为电离层传播特性.
    • 基金资助:
    • 国家自然科学基金项目 (No.61331012,No.61302006)

Inversion Method of Ionospheric Profile Based on Data Preprocessing

LU Zhuan-xia, LIU Wen, WEI Na, LOU Peng   

  1. China Research Institute of Radio Wave Propagation, Qingdao, Shandong 266107, China
  • Received:2016-01-26 Revised:2017-09-26 Online:2018-03-25 Published:2018-03-25

摘要: 对于交叠多项式反演方法中较多或大量数据缺失、以及未结合电离层传播特性的数据插值处理导致的剖面计算误差大幅增大,甚至错误的问题,在对交叠多项式电离层剖面反演方法理论分析研究的基础上,本文提出基于数据预处理的电离层剖面反演改进方法.该方法首先基于理论方法构建电离层剖面模型,结合实测虚高数据,完成缺失数据补偿预处理;然后通过搜索、迭代的方式,基于交叠多项式模型实现E层、"谷层"和F层剖面的整个反演.使用该方法对实测数据进行了电离层剖面反演,结果显示该方法获得的剖面更符合实际物理意义;使用反演结果合成的虚高数据与实测虚高数据也较好地吻合,进一步验证了反演算法的有效性.

关键词: 垂测电离图, 电离层, 谷层, 临界频率

Abstract: An ionospheric profile with increasing error or even fault will be caused by the missing of large number of data, or taking no propagation feature into account in the data interpolation, in the overlapping polynomial inversion. In the paper, an improved method for the profile inversing is presented with emphasis on data preprocessing. In this method, an ionospheric model is constructed from theory, and the missing data are compensated with the measured virtual heights. Then, the whole profile inversion is realized with the overlapping polynomial model through searching and iterating algorithm. The method is tested with real data and a more reasonable results with physical meaning is obtained. The effectivity of the proposed method is further verified with the synthesized virtual heights from inversing results comparing with that of the measured.

Key words: vertical sounding ionogram, ionosphere, valley, critical frequency

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