Theoretical analysis of soil freeze/thaw process on DDM waveform and multipath in order for GNSS-R/IR applications
WU Xuerui, XIA Junming, BAI Weihua, ZHANG Xinggang
Acta Geodaetica et Cartographica Sinica . 2019, (8): 1059 -1066 .  DOI: 10.11947/j.AGCS.2019.20180038