月表遥感影像的辐射地形改正原理研究

In lunar remote sensing imageries, irregular terrain causes the change of relative orientation between image pixels and solar radiance. It is topographic influences that lead to various solar radiance received by slope surface, further to various values of pixels in lunar remote sensing imageries. Topographic correction of lunar remote sensing image is to produce ortho-rectification remote sensing image by correcting the values of pixels on slope surface to that on horizontal surface in the same solar condition(with same incidence/extend angles and distances). In this paper, the theory of topographic correction of lunar remote sensing imageries has been proposed, and the relationship between values of pixels and terrain (including slope and aspect) has been quantitatively analyzed. An experiment of lunar remote sensing data demonstrated the satisfied correction results.