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在中国青岛地区进行了海雾对8mm信号视距传播时所产生的衰减和闪烁测量实验。1min平均衰减统计表明浓海雾所引起的衰减可接近1dB/km;并对信号的功率谱密度进行了统计分析,分析了海雾湍流团的快变化和慢变化特性;海雾湍流结构符合Holmogorov理论;对信号起伏方差的统计结果推算海雾湍流结构常数在10-11量级。
The experiment of decay and flicker produced by the sea fog on 8mm signal line-of-sight propagation was conducted in Qingdao, China. 1min average attenuation statistics show that the attenuation caused by the dense sea fog can be close to 1dB / km; the power spectral density of the signal is statistically analyzed, the fast and slow variation characteristics of the sea fog turbulent mass are analyzed; the structure of the sea-fog turbulence accords with Holmogorov Theory; the statistical results of the signal fluctuation variance are deduced that the sea-fog turbulence structure constants are in the order of 10-11.