Development of Synergetic-Active Sensor-System for Evaluation of Observations by EarthcareHajime Okamoto, Kaori Sato, Masahiro Fujikawa, Eiji Oikawa, Tomoaki Nishizawa, Shoken Ishii, Yoshitaka Jin, Makoto Aoki and Nobuo SugimotoEPJ Web Conf., 237 (2020) 07011DOI: https://doi.org/10.1051/epjconf/202023707011