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Sea Surface Electromagnetic Scattering Characteristics of JONSWAP Spectrum Influenced by its Parameters

机译：参数对JONSWAP谱的海面电磁散射特性的影响

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The JONSWAP spectrum sea surface is mainly determined by parameters such as the windspeed, the fetch length and the peak enhancement factor. In view of the study of electromagneticscattering from JONSWAP spectrum sea surface, we need to determine the above parameters.In this paper, we use the double summation model to generate the multi-directional irregularrough JONSWAP sea surface and analyze the distribution concentration parameter and thepeak enhancement factor’s influence on the rough sea surface model, then using physical opticsmethod to analysis the JONSWAP spectrum sea surface’s average backward scatteringcoefficient change with the different distribution concentration parameters and the peakenhancement factors, the simulation results show that the peak enhancement factor influence onthe ocean surface of the average backward scattering coefficient is less than 1 dB, but thedistribution concentration parameter influence on the JONSWAP surface of the averagebackward scattering coefficient is more than 5 dB. Therefore, when we study theelectromagnetic scattering of the JONSWAP spectral sea surface, the peak enhancement factorcan be taken as the mean value but the distribution concentration parameter have to bedetermined by the wave growth state.
机译：JONSWAP频谱海面主要由诸如风速，获取长度和峰值增强因子之类的参数确定。针对JONSWAP频谱海面电磁散射的研究，需要确定上述参数。本文采用双重求和模型生成多向不规则粗糙JONSWAP海面，并分析了分布浓度参数和峰值增强。因子对粗糙海面模型的影响，然后利用物理光学方法分析了不同分布浓度参数和峰值增强因子对JONSWAP谱海面平均后向散射系数变化的影响，仿真结果表明，峰值增强因子对海平面的影响平均后向散射系数小于1 dB，但平均向后散射系数对JONSWAP表面的分布浓度参数影响大于5 dB。因此，在研究JONSWAP频谱海面的电磁散射时，可以将波峰增强因子作为平均值，但分布浓度参数必须由波的生长状态来确定。

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