景物对比度 meaning in Chinese

scene contrast
subject contrast

Atmospheric attenuation of scene contrast is studied theoretically on the basis of radiometric principles , and the relationships between the measured maximal detection range for a target and visibility distance under two possible conditions are obtained
根据辐射度学原理，从理论上研究景物对比度在大气传输中的衰减，得到了在两种可能的条件下所测得的目标最大探测距离与能见距离的关系。