Extended Data Fig. 4: The LPR data of Channel-1.
From: Lunar regolith and substructure at Chang’E-4 landing site in South Pole–Aitken basin
a, The raw data profile; b, The profile after using a bandpass filter between 10 and 80 MHz for each trace and a 2D median filter using parameters of (3,10). The depth is converted from the travel time using a relative dielectric model shown in Extended Data Fig. 7. The processed data shown in b is exactly the same as that shown in Fig. 2, which is shown here to examine the processing results compared with the original data shown in a.
