地面目标的可见光特征及防护研究

研究了地面目标的可见光特征。研究表明地面目标的可见光辐射主要是反射太阳辐射,太阳对地面目标形成的辐照度与日地距离、太阳天顶角、大气气象条件、地面目标海拔高度等有密切关系。目标与背景在可见光波段的对比度取决于目标与背景的反射率;目标与背景对比度在大气中传输时,大气气象条件是最主要的影响因素。文章最后对地面目标的可见光防护方法进行了探讨。

Study on Visible Light Characteristics of Ground Target and Its Protection

In this paper, the visible light characteristic of ground target was studied. The result indicated that the visible light radiation of ground target mainly comes from the solar radiance the target reflected. There is close relationship between the solar irradiance which irradiates on ground target and the sun-earth distance, the sun zenith angle, the weather condition, the height above sea level. The contrast between target and its background is decided by their reflectivity. When the contrast transmits in the atmosphere, the weather condition is the main impact factor. The measures that can be used to protect ground targets on visible light waveband were also discussed.