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雪作为衡量全球气候变化有效的信息源之一,其热辐射存在偏振特性,且这一偏振特性会受到多因素的影响。为了定量分析单一因素及其交互作用对雪的热辐射偏振特性的影响,在传统分析的基础上,设计了三因素三水平的正交实验。结果表明,探测角、方位角和波段均对雪的热辐射偏振特性产生影响;探测角对雪的热辐射偏振度产生显著的影响;探测角与其他两因素的交互作用以及波段均对雪的热辐射偏振度产生显著影响;方位角对雪的热辐射偏振度有一定的影响,而它与波段的交互作用不会对雪的热辐射偏振度产生影响。因此,在研究中,既要考虑单因素本身对雪的热辐射偏振特性的影响,还要考虑交互作用的影响。
As one of the most effective sources of information on global climate change, snow has polarization characteristics of heat radiation, and this polarization characteristic is affected by many factors. In order to quantitatively analyze the influence of single factor and its interaction on the thermal radiation polarization of snow, an orthogonal experiment with three factors and three levels was designed based on the traditional analysis. The results show that both the detection angle, the azimuth angle and the wavelength band have an influence on the thermal radiation polarization characteristics of snow; the detection angle has a significant influence on the degree of thermal radiation polarization of snow; the interaction between the detection angle and the other two factors and the influence of the snow band The azimuth has a certain influence on the degree of polarization of the thermal radiation of snow, and its interaction with the band will not affect the thermal radiation polarization of snow. Therefore, in the research, it is necessary to consider the single factor itself on the thermal radiation characteristics of snow, but also consider the impact of interaction.