基于嫦娥三号软着陆目标区域选取的研究

The Landing Target Region Selection Based on the Chang'e No.3

针对嫦娥三号探月卫星运行过程,主要探究嫦娥三号软着陆过程中着陆目标区域的选取。根据不同地域所拍摄照片像素点数值大小不同的特性,通过构造、计算平坦系数并建立合适的空间直角坐标系,从而找出相对平坦区域,根据路径最小原则,选取嫦娥三号的最佳着陆地点,并给出相应的轨迹方程。

Aim ming at the process of the Chang＇e 3 lunar exploration project, this paper, mainly studies to select the object region in the process of Chang＇e 3 soft landing. According to characteristics that pictures photoed in different areas have different sizes of the numerical pixel, it will be established a suitable space rectangular coordinate system and find out a relatively flat areas by construting and calculating flat coefficient. and select the best landing point of Chang＇e, and conclude a corresponding trajectory equation under the principle of the minimum path.