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背景条件对低电离层预加热幅度调制的影响

杨鼎 方涵先 汪四成

杨鼎, 方涵先, 汪四成. 背景条件对低电离层预加热幅度调制的影响[J]. 空间科学学报, 2017, 37(4): 403-413. doi: 10.11728/cjss2017.04.403
引用本文: 杨鼎, 方涵先, 汪四成. 背景条件对低电离层预加热幅度调制的影响[J]. 空间科学学报, 2017, 37(4): 403-413. doi: 10.11728/cjss2017.04.403
YANG Ding, FANG Hanxian, WANG Sicheng. Effects of Background Conditions on Lower Ionosphere Pre-heating Amplitude-modulation[J]. Journal of Space Science, 2017, 37(4): 403-413. doi: 10.11728/cjss2017.04.403
Citation: YANG Ding, FANG Hanxian, WANG Sicheng. Effects of Background Conditions on Lower Ionosphere Pre-heating Amplitude-modulation[J]. Journal of Space Science, 2017, 37(4): 403-413. doi: 10.11728/cjss2017.04.403

背景条件对低电离层预加热幅度调制的影响

doi: 10.11728/cjss2017.04.403
基金项目: 

国家自然科学基金项目资助(40505005)

详细信息
    作者简介:

    杨鼎,E-mail:yangdhover@163.com;方涵先,E-mail:fanghxp@163.com

  • 中图分类号: P352

Effects of Background Conditions on Lower Ionosphere Pre-heating Amplitude-modulation

  • 摘要: 基于电离层连续性方程和能量方程,建立了预加热模式下低电离层幅度调制加热理论模型,研究预加热阶段电离层电子密度和调制阶段电流随预加热时间的变化,探讨不同背景条件对幅度调制产生的极低频/甚低频(ELF/VLF)电磁波强度的影响.结果表明,预加热调制在90~100km高度效果较好,在夜间进行预加热调制激发的ELF/VLF强度增幅不明显,各季节中在春季调制强度增幅最大,太阳高年预加热调制比太阳低年的效果好,低纬地区强度增幅远大于中纬地区强度增幅.在一定加热条件下(有效辐射功率200MW,频率1kHz),不同背景条件(除夜间外)下的预加热幅度调制模式在考虑能耗情况下,均在预加热10s时效果最好.

     

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出版历程
  • 收稿日期:  2016-08-30
  • 修回日期:  2017-03-07
  • 刊出日期:  2017-07-15

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