Lunar Penetrating Radar Data Processing and Analysis Based on CEEMD

Abstract

Knowledge of the subsurface structure not only provides important information on lunar geology, but also is critical for quantifying potential resources for lunar exploration and engineering for human outposts. The dual-frequency lunar penetrating radar (LPR) aboard the Yutu rover provides a unique opportunity to map subsurface structure to a depth of several hundreds of meters from the low-frequency channel and near-surface stratigraphic structure of the regolith from high-frequency observations. A low-frequency radar image can be available, based on a data processing flow. Since the data is troubled by frequency dispersion and noise which may caused by instrument, Complete Ensemble Empirical Mode Decomposition (CEEMD) helps to process and analyze the LPR data. Finally, combining with the history of the moon, regional geology, especially the Intrinsic Mode Functions (IMF) of LPR data, we give a interpretation of the subsurface structure around landing site.