蒸发波导环境测量方法对比分析

Comparative Analysis of the Methods for Obtaining the Evaporation Duct Environmental Parameters

蒸发波导现象显著影响海上电磁波传播,快速获取大范围精确的修正折射率参数成为了蒸发波导研究热点。文中分析了现有的蒸发波导预测模型,对其中的经典模型进行了仿真,对比不同模型的仿真结果,总结了模型方法预测波导高度及修正折射率廓线的不足。然后从硬件角度出发对比现有蒸发波导测量系统原理、测量精度及适用条件,分析测量系统引入的误差源进而给出了不同测量系统的改进方向,总结出修正折射率廓线测量系统应具备的测量精度及数据条件。最后通过方法间对比及蒸发波导实测数据的应用过程分析,对不同方法未来的研究方向和发展趋势进行了展望。

The evaporation duct has a significant effect on the propagation of electromagnetic waves on the sea.The rapid acquisition of large scale accurate refractive index parameters has become a research hotspot of evaporation duct. This paper firstly analyzes the existing prediction model of evaporation duct and simulates the classical model. Then the prediction model of evaporation duct height is established and the lack of correct refractive index profile is summarized by comparing the simulation results of different models. In order to sum up the measurement accuracy and data conditions that the measuring system should have, and analyze the error source introduced by the measurement system aiming at the improvement direction of different measurement systems, this paper compares the original principle, measurement accuracy and applicable conditions of the existing evaporation duct measurement system from the perspective of hardware. Finally, the future research direction and development trend of different methods are summarized through the comparison of the methods and the analysis on the application process of the measured data used in evaporation duct environmental parameter calculation.