Frequency Management System (FMS) for Over-the-Horizon Radar (OTHR) Using a Near-Real-Time Ionospheric Model. - Thayananthan Thayaparan; Hannah Villeneuve; David R. Themens; Benjamin Reid; E. Michael Warrington; Taylor Cameron; Robyn A. Fiori (IEEE Trans. Geosci. Remote. Sens., 2022)