摘要
本文推导了四种基本空间漫反射表面的地面照度表达式,计算了圆台—圆柱一半球面组合体的等效视星等值,并讨论了目标尺寸、表面漫反射系数和距观测站斜距以及太阳、目标、观测站几何位置对星等值的影响。给出了典型目标的星等范围在4~m—9~m之间,这一结论与观测站所给数据基本一致。
The expressions of observed irradiance of four kinds of typical space diffused-reflective surface are derived in the paper, and the equivalent stellar magnitude of the combineg object of frustum-cylinder-semisphere is calculated. The effects of the size, surface diffusive refiectivity, slant range(from the sensor) of target and the sun-target-observer geometry on the stellar amgnitude are discussed. The stellar magnitude range of typical target is given to be 4~m—9~m, the value is in agreement with measured result.
出处
《光学工程》
CSCD
1989年第2期21-26,共6页
