摘要
有效载荷激光高度计获得的高程数据描述了月球的真实地形地貌.依据中国科学院国家天文台发布的源数据进行DEM建模和数据预处理,提取坑谷状地形的地理信息,提出基点弥散方法,通过计算平面曲率寻找坑唇点,确定非规则边界月球坑搜寻的终止条件,对全月陨石坑进行了识别标定及特征参数计算.按照所得不同年龄陨石坑的统计分布规律,结合坡度坡向矩阵,重建月海地貌仿真地形,得到输入参数用户控制的三维高程数据,可据此重构大量月海地貌,进行着陆安全概率计算.
Elevation data obtained by the payload laser altimeter described the real lunar topography.Digital elevation modeling and data preprocessing were carried out based on source data published by National astronomical observatories.Topographic information of pit-valley terrain was extracted.The seed dispersion method was proposed.Lunar crater lip points were found by calculating surface curvature,and so recursion terminal condition for searching irregular boundary craters was determined.The whole craters were identified on the moon and which characteristic parameters were calculated.Number of craters in designated areas were counted and so does the statistic distribution.Combined with the slope direction matrix,the simulated terrain of lunar mare was obtained and the generated three dimensional elevation data can be controlled by the user.The probability of safe landing can be analyzed by reconstructing a large number of simulated lunar terrain.
作者
禹健
郝秀芳
安永泉
YU Jian;HAO Xiufang;AN Yongquan(Automation Department, Shanxi University, Taiyuan 030013, China;School of Information and Communication Engineering, North University of China, Taiyuan 030051, China)
出处
《测试技术学报》
2021年第2期120-127,共8页
Journal of Test and Measurement Technology
基金
“十三五”全军共用信息系统装备专用技术预先研究资助项目(31512080305)。
关键词
数字高程模型
陨石坑
月海
DEM重建
着陆安全概率
digital elevation model
lunar craters
lunar mare
DEM reconstruction
landing safety probability
