中国空间磁层线辐射现象探究

doi:10.13700/j.bh.1001-5965.2017.0525

北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (7): 1504-1513.doi: 10.13700/j.bh.1001-5965.2017.0525

中国空间磁层线辐射现象探究

盛雪莲, 吴静, 张翀

北京航空航天大学自动化科学与电气工程学院, 北京 100083

收稿日期:2017-08-11 出版日期:2018-07-20 发布日期:2018-07-25
通讯作者: 吴静.E-mail:wujing06@buaa.edu.cn E-mail:wujing06@buaa.edu.cn
作者简介:盛雪莲女,硕士研究生。主要研究方向：电离层中的特殊辐射现象;吴静女,博士,副教授。主要研究方向：电磁场理论及其应用。
基金资助:
国家自然科学基金（51207006）

Space magnetospheric line radiation above China

SHENG Xuelian, WU Jing, ZHANG Chong

School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

Received:2017-08-11 Online:2018-07-20 Published:2018-07-25

摘要/Abstract

摘要： 对2008—2010年覆盖中国空间的DEMETER卫星电场探测数据进行分析，共识别出328例磁层线辐射（MLR）事件。根据已有MLR事件的频谱特征，研究了中国空间的MLR事件的特征及其可能的原因。对所有MLR事件进行统计分析，结果表明这些事件白昼的出现率高于夜晚，秋冬季的出现率高于春夏季；与地磁活动水平无明显关联，主要出现在中国中低纬度地区空间；频率间隔主要分布在55~95 Hz，频率漂移速率大都在0~0.4 Hz/s，并且频谱最高强度与地理纬度无明确关联。中国空间MLR事件的特征与中国空间所观测到的电力线谐波辐射（PLHR）事件的特征相似，与国外已发现的MLR事件的特征有所不同。

关键词: 磁层线辐射(MLR), 电离层, 卫星探测, 空间环境, 电力线谐波辐射(PLHR)

Abstract: The electric field data observed by DEMETER satellite in the space above China from 2008 to 2010 were analyzed, and 328 magnetospheric line radiation (MLR) events were detected. According to the spectrum of the existing MLR events, the characteristics and their possible cause of these MLR events were studied. We made statistical analysis on all MLR events, and the results indicated that there were more MLR events in daytime than in nighttime and more in winter and autumn than in summer and spring. MLR showed no significant dependence on geomagnetic activity. Most of events were distributed in the low and medium latitude. The frequency intervals of MLR events were between 55 Hz and 95 Hz, the frequency drift rates were mostly in the range of 0-0.4 Hz/s, and peak intensities in frequency-time spectrograms seemed to be independent of latitude. The characteristics of MLR events observed in the space above China were similar to those of power line harmonic radiation (PLHR) events, but different from those observed abroad.

Key words: magnetospheric line radiation (MLR), ionosphere, satellite detection, space environment, power line harmonic radiation (PLHR)

中图分类号:

P352.7

盛雪莲, 吴静, 张翀. 中国空间磁层线辐射现象探究[J]. 北京航空航天大学学报, 2018, 44(7): 1504-1513.

SHENG Xuelian, WU Jing, ZHANG Chong. Space magnetospheric line radiation above China[J]. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2018, 44(7): 1504-1513.

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中国空间磁层线辐射现象探究

Space magnetospheric line radiation above China

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