A Novel Approach for Permittivity Estimation of Lunar Regolith Using the Lunar Penetrating Radar Onboard Chang'E-4 Rover. - Wang, Ruigang; Su, Yan; Ding, Chunyu; Dai, Shun; Liu, Chendi; Zhang, Zongyu; Hong, Tiansheng; Zhang, Qing; Li, Chunlai (Remote Sensing, 2021)