| 蒸发波导模型与微波超视距传播试验对比 |
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| 引用本文： | 郭相明,林乐科,赵栋梁,刘永胜,张利军,康士峰.蒸发波导模型与微波超视距传播试验对比[J].电波科学学报,2021,36(1):150-155,162. |
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| 作者姓名： | 郭相明 林乐科 赵栋梁 刘永胜 张利军 康士峰 |
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| 作者单位： | 1.中国电波传播研究所 电波环境特性及模化技术重点试验室，青岛 266107 |
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| 基金项目： | 国防技术基础项目;国防预研项目 |
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| 摘 要： | 海洋蒸发波导是实现近海面超视距电波传播的重要环境，利用蒸发波导模型和电波传播数值算法是获取路径损耗的主要途径. 基于海上平台约7个月测量的水文气象参数，对比了Paulus提出的PJ模型和美国海军研究生院（Naval Postgraduate School, NPS）提出的NPS模型，同时利用约1个月的海上超视距传播测试数据，分析了蒸发波导模型在不同环境条件下路径损耗的计算结果. 研究表明:1）PJ和NPS蒸发波导模型在不稳定大气条件下预测一致性较好，但通常NPS预测的蒸发波导高度小于PJ模型，而在稳定大气条件下预测结果相差较大；2）利用单点水文气象测量数据，NPS模型预测的传播损耗优于PJ模型，特别是在不稳定大气条件下；3）以传播损耗统计累积中值为标准，PJ和NPS模型预测的中值路径损耗与实际测量损耗中值的差值分别为–14.02 dB和–10.06 dB. 所得研究结果对利用单点测量的水文气象参数进行海洋或海岸区域微波超视距电波传播的路径损耗预测和无线通信系统的规划具有一定的指导意义.
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| 关 键 词： | 蒸发波导 超视距 路径损耗 电波传播 |
| 收稿时间： | 2019-10-25 |
Comparison of evaporation duct models and microwave transhorizon propagation experiment |
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| GUO Xiangming,LIN Leke,ZHAO Dongliang,LIU Yongsheng,ZHANG Lijun,KANG Shifeng.Comparison of evaporation duct models and microwave transhorizon propagation experiment[J].Chinese Journal of Radio Science,2021,36(1):150-155,162. |
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| Authors: | GUO Xiangming LIN Leke ZHAO Dongliang LIU Yongsheng ZHANG Lijun KANG Shifeng |
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| Affiliation: | 1.National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, China2.College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China |
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| Abstract: | Evaporation duct is an anomalous transhorizon propagation environment in marine surface layer.Using evaporation duct model and electromagnetic wave propagation model is the main way to obtain path loss.The model proposed by Paulus and Jesk and another model established originally by American Naval Postgraduate School(NPS)are the most widely used,which are called the PJ model and NPS model,respectively.Based on the nearly seven months meteorological and oceanographic(METOC)parameters measurements on a sea platform,the two evaporation duct models are compared.Meantime,using nearly one month propagation experiment data,the relative performance of the two evaporation duct models in propagation path loss computation is compared under different environmental conditions.The results indicate:1)both of the two evaporation duct models performed reasonably well in unstable atmospheric condition,the evaporation duct heights predicated by NPS are usually lower than PJ.In stable atmospheric conditions,the two models are vastly different;2)using the single point hydrological meteorological measurements,NPS model is better than PJ model in path loss prediction, especially in unstable atmospheric condition;3) based on thecumulative median path loss distribution, the PJ and NPS model differences are –14.02 dB and –10.06 dB, respectively.The results are helpful for the path loss prediction in microwave transhorizon propagation and the planningprogramming in radio communication system in marine and coastal zones. |
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| Keywords: | evaporation duct transhorizon propagation path loss radio wave propagation |
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