This is the Swarm Thermal Ion Imager (TII) Cross-track ion drift processor.
References:
Knudsen et al. (2017) Thermal ion imagers and Langmuir probes in the Swarm electric field instruments, Journal of Geophysical Research, 122(2), 2655-2673.
Lomidze et al. (2019) Validity Study of the Swarm Horizontal Cross-Track Ion Drift Velocities in the High-Latitude Ionosphere, Earth and Space Science, 6(3), 411-432.
Details on the processing method and output file format are available from the TIICT Release Notes at ESA's Swarm Data Access page.
Copyright (C) 2022 Johnathan K Burchill
Developed at the University of Calgary (2020-2022) with support of the Canadian Space Agency. Alexei Kouznetsov and David Knudsen contributed to the development of the processing methology.
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.