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将森林看成空气和植物组成的混合物,应用两相混合物折射模型求解了森林的等效介电常数,通过与实验结果的对比,验证了该模型的正确性.将该森林介电常数求解方法引入到抛物方程的森林模型中,改进了抛物方程的森林模型.相对于传统的森林环境电波传播模型,该模型能考虑森林各组成要素对电波传播的影响,更适合于实际不同地区、不同种类植物分布的森林环境中电波传播特性的求解.此外,引入了非均匀网格技术,有效提高了大区域森林环境中电波传播问题的求解效率.最后基于该模型仿真分析了森林的植物体积含量、重量含水量等要素对电波传播特性的影响.
Considering the forest as a mixture of air and plant, the equivalent dielectric constant of the forest was calculated by using the refraction model of two-phase mixture. The correctness of the model was verified by comparison with the experimental results. The introduction of the forest model of parabolic equation improves the forest model of parabolic equation.Compared with the traditional radio propagation model of forest environment, the model can consider the impact of forest elements on the radio wave propagation, and is more suitable for the actual different regions, different types Plant distribution in the forest environment. In addition, the introduction of non-uniform grid technology, effectively improve the efficiency of solving large-scale regional forest wave propagation problems.Finally based on the model of the simulation of the forest plant volume content, Influence of elements such as weight and water content on the propagation characteristics of radio waves.