Edited by: Mamoru Yamamoto, Wayne K. Hocking, Satonori Nozawa, Juha Vierinen, Huixin Liu, Nozomu Nishitani
This special issue calls for papers from the joint meetings of the Fifteenth Workshop on Technical and Scientific Aspects of MST Radar (MST15/iMST2) and the Eighteenth EISCAT Symposium (EISCAT18) held in Tokyo, Japan, during May 26-31, 2017. The MST Workshops are the primary international meetings on the applications and development of MST radars. The EISCAT Symposium is the biennial conference for EISCAT-related radar research and science. May 2017 joint meeting was a timely opportunity for close and extensive interactions of the middle-atmosphere and ionospheric radar scientists in our era of rapid technological changes and computational advances. We solicit papers of all styles (letter/full paper/technical report).