嫦娥一号激光高度计在轨月球高程数据测量不确定度研究

对嫦娥一号激光高度计月球表面在轨高程探测数据进行了误差分析处理和不确定度评定研究。首先,选择了月海平坦地形区域的激光高度计高程数据;然后分析了主要的探测不确定度来源,建立了相应数学模型;最后采用了蒙特卡洛方法(MCM)进行了不确定度评定研究,给出了某些月海区域高程探测不确定度评定结果,并与测量不确定度表示指南方法(GUM)进行对比。研究结果表明:MCM评定方法与GUM方法结果基本一致;处理结果也能和其他月球探测结果进行对比研究,希冀对月球及空间环境有更多、更新的发现。

The Research of Measurement Uncertainty of On-orbit Lunar Elevation Data with the Laser Altimeter on Chang'E-1 Satellite

To study the detecting uncertainty of lunar elevation of Laser Altimeter on Chang’E-1 satellite, lunar surface on-orbit elevation measurement data was investigated. Firstly, the elevation measurement data with laser altimeter were selected from lunar mare flat terrain region. Then, the main uncertainty sources were analyzed and the corresponding mathematical model was established. Finally, the uncertainty evaluation was researched based on Monte Carlo method (MCM), in addition, the evaluation results of several lunar mare elevation detection were given and compared with the results of guide to the uncertainty in measurement (GUM). The results show that the evaluation results of MCM are essentially in agreement with the results of GUM. The processing results can be contrast with the results of other lunar detection, in order to have more and updated discoveries of the moon and space environment.