The Research and Experiment of the Modified Terrain Parabolic Equation Model Based on the Amended Atmosphere Attenuation AlgorithmReport as inadecuate




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Terrain Parabolic Equation Model TPEM is widely used in the numerical simulation of electromagnetic wave propagation. But the algorithm and theory of atmosphere attenuation in TPEM is not consistent with the real fact, this disadvantage induces the calculation error directly. According to this disadvantage, this paper uses the amended algorithm of the attenuation ratio to modify the TPEM based on the relation between the degressive water vapor density and the vertical altitude. With the contrast test of electromagnetic wave propagation and radar detection, the numerical simulation results of the TPEM and modified TPEM are contrasted, analyzed and validated, and the contrast conclusion shows the validity and veracity of the modified TPEM.

KEYWORDS

Atmosphere Attenuation Ratio; Water Vapor Density; Modified TPEM; Contrast Test

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Author: Yaming Zhao, Yonggang Zhang, Haichuan Tang

Source: http://www.scirp.org/



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