蒸发波导RSHMU 模型预测性能分析
Prediction Performance Analysis of Evaporation Duct RSHMU Model
  
DOI:
中文关键词:  蒸发波导,俄罗斯国立水文气象大学模型,蒸发波导高度,蒸发波导强度
英文关键词:evaporation duct, RSHMU model, evaporation duct height, evaporation duct strength
基金项目:
作者单位
张利军,郭相明,李建儒 中国电波传播研究所,青岛 266107 
摘要点击次数: 108
全文下载次数: 0
中文摘要:
      大气波导能够改变电磁波的正常传播特性,因而得到学界极大关注。当前大气波导研究中所用蒸发 波导模型缺乏RSHMU 模型的预测性能分析,文中对RSHMU 模型的预测方法进行了深入研究。更正了文献中给出 的温度剖面稳定度函数表达式,利用正确的剖面稳定度函数,获得了该模型在不同风速以及不同相对湿度条件下的 敏感性分析结果。与渤海梯度塔实测数据对比分析表明:该模型预测蒸发波导高度的平均误差为-2. 2 m,均方根误 差为4. 5 m;预测强度的平均误差为1. 1 M 单位,均方根误差为2. 0 M 单位。不稳定条件下该模型的高度预测性能 优于美国海军研究生院提出的NPS 模型,而强度预测性能上二者相当。
英文摘要:
      Atmospheric duct can change the normal propagation characteristics of electromagnetic wave, so it has been paid great attention by the academia. In response of the lack of the RSHMU model′s prediction performance analysis in current evaporation duct models, this model for evaporation duct prediction method is studied deeply. And the expression of temperature profile stability function given in the literature is corrected. The sensitivity analysis results of this model are obtained under different wind speed and different relative humidity conditions using the corrected profile stability function. Compared with the measured data of a gradient tower in Bohai sea, it is shown that the height average error is -2. 2 m and the root-mean-square error is 4. 5 m; the strength average error is 1. 1 M unit and the root-mean-square error is 2. 0 M unit. The height prediction performance of this model in the unstable condition is better than that of the NPS model proposed by USA Navy Postgraduate School and the strength prediction performance is roughly the same between the two models.
查看全文  查看/发表评论  下载PDF阅读器
关闭