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对本研究获得的数据进行傅里叶变换分析表明：磷烟幕的质量消光系数似乎与具有不稳定平均值的随机变量相似。本文将这种分析法应用于程长５米以上的６～１２微米波段内选用波长和程长约１００米的３．４微米波段的质量消光系数的瞬时关系分析。然后，将这种用傅里叶变换分析法获得的不稳定平均值与用粒径分布数据获得的值进行比较。结果表明，这两组数据相当一致，因此可以认为，至少在某些情况下不应将质量消光系数视作烟幕的“光学常数”。
The Fourier transform analysis of the data obtained in this study shows that the mass extinction coefficient of phosphorus smoke screen appears to be similar to the random variable with unstable mean. In this paper, this method is applied to analyze the transient extinction coefficient of mass extinction coefficient in the wavelength range of 6μm to 12μm with wavelength of 3.4μm and wavelength of about 100μm. Then, this unstable average obtained by the Fourier transform analysis is compared with the value obtained by the particle size distribution data. The results show that the two sets of data are fairly consistent, so that the mass extinction coefficient should not at least be considered in some cases as the “optical constant” of the smoke screen.