MANEXT is a set of algorithms used for maneuver detection and characterization, whose inputs are time series of the orbital elements. This tool is useful for orbit raising, in-plane station keeping, out-of-plane station keeping, re-orbiting, change-of-plane maneuvers, GEO location changes, and other calculations. The algorithm’s outputs are 30 parameters per detected maneuver including the satellite identification number, start and stop times, initial and final orbital positions, the type of maneuver, Delta-V, mass consumption, and remaining mass and lifetime estimates.
The orbital elements extracted from public TLE are processed using signal analysis methods to identify the moment when the satellite has been maneuvering. Each maneuver is characterized with an estimated Delta-V consumption and can be converted in mass consumption when the thruster technology is known. MANEXT is also a database of thousands of maneuvers performed by satellites since the 1990s. The data can be sorted according to their level of frequency, such that MANEXT can also be used to detect suspicious on-orbit maneuvers.