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| Study on Subgridding Model of the Parabolic Equation and Its Application |
| Zhang Qing-hong① Liao Cheng① Sheng Nan① Zhao Peng-cheng① Zhou Hai-jing② |
①(Institute of Electromagnetics, Southwest Jiaotong University, Chengdu 610031, China)
②(Institute of Applied Physics and Computational Mathematics, Beijing 100094, China) |
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Abstract In order to rapidly and accurately solve the radio wave propagation problems in a large scale complex electromagnetic environment with key targets, a subgridding model of the Parabolic Equation (PE) method based on the non-uniform mesh technology is presented with the detailed description on how to construct specificaly this model. The high efficiency of subgridding technique is verified by computing a complex electromagnetic environment case with a strong scattering object. The results show that the subgridding technique for the parabolic equation can improve the computational speed by 4.57 times and decrease the grid number by 86.64% as compared with the fine grid. It has a higher precision in comparition with the non-uniform mesh, demonstrating that the subgridding model can significantly enhance the simulation efficiency in solving the parabolic equation.
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Received: 17 September 2013
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Corresponding Authors:
Zhang Qing-hong
E-mail: zqh19861020@163.com
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2014, Vol. 36 
