中文摘要：

改进了月面中低纬度地区光照分析算法,以Aristarchus高原（AP）为例,使用LRO卫星获得的高分辨率、高精度的LOLA数据和DE/LE430月球行星历表,同时基于月球天平动模型,定量计算和分析了AP地区的光照特性。结果表明：AP地区的光照率都在0.35以上,平坦地区的光照条件较好,受到地形的影响不同位置的光照率相差很大。光照率最大值点（B）要比最小值点（A）高出30%以上。考虑典型的长周期天平动效应,18.6年光照数据的分析结果表明,每个位置的光照率变化较小且趋于稳定,这对月球表面演化研究是一个重要的参考。

英文摘要：

The illumination analysis algorithm at mid-low latitudes is improved. Taking Aristarchus plateau （AP） as anexample,the high resolution and high accuracy LOLA data from the LRO satellite and DE/LE430 lunar planetary ephemeris areused to quantitatively calculate and analyze the illumination characteristics of AP based on the Moon’s libration model. The resultsshow that the illumination rates of AP area are all over 0.35,and the illumination condition of flat area is good. The illuminationrates vary greatly in different regions because of the influence of terrain. The maximum illumination rate is higher than the minimumabove 30%. Considering the typical long term libration effects,the results of 18.6 years show that the change of illumination rate issmall and stable,which is an important reference for the research on the evolution of the lunar surface.