Comparison of Dielectric Properties and Structure of Lunar Regolith at Chang'e-3 and Chang'e-4 Landing Sites Revealed by Ground Penetrating Radar

<strong>Fig 2(d) dataset.</strong> Signal Power profile and after R², R³, R⁴backscatter/spreading correction. The first column is depth in meter, second column is original data, third, forth, fifth column is original data after R², R³, R⁴ correction,respectively. <strong>Fig 3(b) dataset. </strong>The first five days of Lunar penetrating radar (LPR) of CE-4 site with Auto Gain Control (AGC) method. Each column represents a single sample of data. <strong>Fig 3(c) dataset. </strong>LPR dataset of CE-4 site using an exponential equation gain function for amplitude compensation. Each column represents a single sample of data.