Changjiang Hu, Ph.D. students in UNSW Austrailia has returned to his University after finishing his visiting stay (3 months) in CommSensLab in UPC-BarcelonaTech. He is studying interesting findings in TDS-1 GNSS-R data. We hope that he would come back well and see you soon at the Academic Conferences (e.g. IGARSS2019). Keep in touch, Changjiang.