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粗糙海面建模及其在蒸发波导传播中的应用研究

郭相明 张玉生 张辉 康士峰

郭相明,张玉生,张辉,等. 粗糙海面建模及其在蒸发波导传播中的应用研究[J]. 电波科学学报,2022,37(2):183-188. DOI: 10.12265/j.cjors.2021215
引用本文: 郭相明,张玉生,张辉,等. 粗糙海面建模及其在蒸发波导传播中的应用研究[J]. 电波科学学报,2022,37(2):183-188. DOI: 10.12265/j.cjors.2021215
GUO X M, ZHANG Y S, ZHANG H, et al. Modeling through sea surface and its application in the evaporation duct propagation[J]. Chinese journal of radio science,2022,37(2):183-188. (in Chinese). DOI: 10.12265/j.cjors.2021215
Citation: GUO X M, ZHANG Y S, ZHANG H, et al. Modeling through sea surface and its application in the evaporation duct propagation[J]. Chinese journal of radio science,2022,37(2):183-188. (in Chinese). DOI: 10.12265/j.cjors.2021215

粗糙海面建模及其在蒸发波导传播中的应用研究

doi: 10.12265/j.cjors.2021215
基金项目: 国家自然科学基金(U21A20457)
详细信息
    作者简介:

    郭相明:(1981—)男,河南人,中国电波传播研究所高级工程师,博士,主要研究方向为海洋大气波导与对流层电波传播

    张玉生:(1969—),男,河南人,中国电波传播研究所研究员级高级工程师,主要研究方向为无线电气象与对流层电波传播

    通讯作者:

    郭相明 E-mail: xmguo08@163.com

  • 中图分类号: TN011

Modeling through sea surface and its application in the evaporation duct propagation

  • 摘要: 海上蒸发波导微波超视距电波传播对舰载雷达的运行具有重要的影响. 本文基于粗糙海面电波散射特征和海面高度分布概率密度函数,提出了一种考虑海面遮蔽影响的海上电波传播计算方法,并与两种不包含遮蔽影响的粗糙海面建模的计算结果进行了模拟和试验对比. 计算结果为:1)随着计算频率和风速的增大,不同粗糙海面处理方法的计算结果差异增大,对应位置的路径损耗差异可达10 dB;2)基于试验数据的对比初步显示采用考虑遮蔽影响改进的抛物方程模型预测的路径损耗精度相对较高,粗糙海面对电波的遮蔽效应是蒸发波导传播损耗计算中的一个重要因素;3)试验结果为不稳定大气时采用NPS蒸发波导模型、稳定大气时采用PJ蒸发波导模型预测大气折射率剖面,所预测的路径损耗要优于采用单一蒸发波导模型的结果. 本文所得结果对海上电波传播计算和大气波导的反演等具有参考价值.
  • 图  1  不同粗糙度衰减因子随Rayleigh粗糙度参数的变化

    Fig.  1  Comparison among the different roughness reduction factors with Rayleigh roughness parameter

    图  2  风速为9 m/s时蒸发波导环境下的修正折射率剖面

    Fig.  2  A typical modified refractivity profile of an evaporation duct with wind speed of 9 m/s

    图  3  蒸发波导环境下的路径损耗空间分布

    Fig.  3  Propagation path loss contours in evaporation duct environment

    图  4  8 m高度处路径损耗对比

    Fig.  4  Propagation path loss comparison at 8 m height

    图  5  60 km距离处路径损耗对比

    Fig.  5  Propagation path loss comparison at 60 km

    表  1  海风时不同传播计算方法和蒸发波导模型预测的与测量的路径损耗对比

    Tab.  1  Comparison among the different roughness parameter methods and evaporation duct models at sea wind

    传播预测方法蒸发波导
    模型
    平均
    误差
    均方根
    误差
    Ament方法PJ4.937518.0741
    NPS4.626412.4649
    NPS&PJ−1.214513.1014
    Miller-Brown方法PJ4.977718.0909
    NPS4.683912.4958
    NPS&PJ−1.173413.1133
    Shadowed方法PJ6.411818.2719
    NPS6.234813.2001
    NPS&PJ0.422813.0196
    下载: 导出CSV
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    GUO X M, KANG S F, HAN J, et al. Evaporation duct database and statistical analysis for the Chinese sea areas[J]. Chinese journal of radio science,2013,28(6):1018-1023. (in Chinese)
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出版历程
  • 收稿日期:  2021-08-11
  • 录用日期:  2022-02-28
  • 网络出版日期:  2022-02-28

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