| feature | Class for features. Features are laser range image segments |
| hist_entry | Struct for track history entries. The history is a cyclic buffer |
| index_table | Struct for beam index lookup table. Given all possible angles in a scan, it holds the precalculated index sequences along the trace of each beam |
| laserscan | Laser scan class |
| local_feature_map | Feature map class |
| local_grid_map | Class for local grids. Used as a free space model for human feature information |
| observation | Struct for observations. All sensor-specific observations have to be wrapped into this format |
| pairing | Struct for pairings (= track-to-observation associations) |
| track | Track class. Each track is an instantiation of this class |
| tracker | Tracker class. This is the "main" class of this tracker implementation |