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VLF电波渗透到卫星高度电离层传播的全波计算

赵庶凡 申旭辉 张学民 潘威炎

赵庶凡, 申旭辉, 张学民, 潘威炎. VLF电波渗透到卫星高度电离层传播的全波计算[J]. 空间科学学报, 2015, 35(2): 178-184. doi: 10.11728/cjss2015.02.178
引用本文: 赵庶凡, 申旭辉, 张学民, 潘威炎. VLF电波渗透到卫星高度电离层传播的全波计算[J]. 空间科学学报, 2015, 35(2): 178-184. doi: 10.11728/cjss2015.02.178
Zhao Shufan, Shen Xuhui, Zhang Xuemin, Pan Weiyan. Full wave calculation of VLF wave penetrated into satellite altitude ionosphere[J]. Journal of Space Science, 2015, 35(2): 178-184. doi: 10.11728/cjss2015.02.178
Citation: Zhao Shufan, Shen Xuhui, Zhang Xuemin, Pan Weiyan. Full wave calculation of VLF wave penetrated into satellite altitude ionosphere[J]. Journal of Space Science, 2015, 35(2): 178-184. doi: 10.11728/cjss2015.02.178

VLF电波渗透到卫星高度电离层传播的全波计算

doi: 10.11728/cjss2015.02.178
基金项目: 科技部国际合作项目(2014DFR21280), 民用航天科研工程项目和中国地震局地震预测研究所中央级公益性科研院所基本科研业务专项 (2012IES0203)共同资助
详细信息
  • 中图分类号: P352

Full wave calculation of VLF wave penetrated into satellite altitude ionosphere

  • 摘要: 考虑斜向地磁场的影响将电离层设为多层水平分层各向异性有耗介质, 利用传播矩阵法求解全波方程, 进而研究分析VLF频段电离层反射系数随电波频率的变化, 电离层中两种特征极化波的折射和极化特性, 两特征波的电磁场水平分量以及坡印廷能流密度随传播高度的变化. 数值计算结果表明, 地—电离层波导中的垂直极化波比平行极化波易渗透进入电离层; 电离层中两种特征极化波可分为左旋和右旋圆极化波, 左旋分支由于D层强吸收作用表现为速衰减模, 而右旋分支表现为可传播模, 在传播过程中电磁波的能量主要存储在磁场中; 电波频率越低, 其在电离层中的传播损耗越小. 由数值模拟结果发现, 卫星监测VLF频段的低频部分及更低频段的水平磁场变化对于发现地震电离层电磁前兆异常可能更为有效.

     

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出版历程
  • 收稿日期:  2014-03-10
  • 修回日期:  2014-10-13
  • 刊出日期:  2015-03-15

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