AIScorrect_speed        Correct GPS errors in AIS tracks
AISextract              Extract AIS positions around target locations
                        and times
AISidentify_stations_aircraft
                        Identify AIS base stations and high-speed craft
AISinfos                Estimate vessel characteristics
AISinterpolate          Interpolate AIS positions
AIStravel               Calculate vessel travel metrics
ais                     Example AIS dataset
point_to_extract        Example extraction locations
