公开(公告)号：US20220373669A1

公开(公告)日：2022-11-24

申请号：US17748222

申请日：2022-05-19

Applicant: Axis AB

Inventor： Anders MANNESSON ,  Anton SEDIN ,  Aras PAPADELIS ,  David WADMARK ,  Sebastian HEUNISCH ,  Stefan ADALBJÖRNSSON ,  Daniel STÅHL

IPC: G01S13/536 ,  G01S13/89 ,  G01S7/35 ,  G01S7/41

Abstract: A method for mapping a static scene using a stationary radar unit operative to transmit radar signals towards a scene, the stationary radar unit comprises a set of receiver antennas configured to detect radar signals from arbitrary directions, and the stationary radar unit is configured to measure target velocity in discrete velocity bins, the method comprising: continuously collecting radar signals over time to detect a static scene using the set of receiver antennas; constructing an occupancy map of the static scene using confirmed detections determined from the collected radar signals, where confirmed detections are detections with radar signal strength exceeding a detection threshold and with velocity falling in a zero velocity bin and detections with radar signal strength exceeding the detection threshold and with a non-zero velocity sufficiently low to cause spill over information in the same bin as detections falling in the zero velocity bin.

公开(公告)号：US20220373672A1

公开(公告)日：2022-11-24

申请号：US17748223

申请日：2022-05-19

Applicant: Axis AB

Inventor： Anders MANNESSON ,  André NÜSSLEIN ,  Anton SEDIN ,  Aras PAPADELIS ,  Daniel STÅHL ,  David WADMARK ,  Sebastian HEUNISCH ,  Stefan ADALBJÖRNSSON

IPC: G01S13/88 ,  G06K9/00 ,  G01S13/72

Abstract: A method for classifying tracks in radar detections of a scene acquired by a stationary radar unit, comprises: acquiring radar detections of the scene using the static radar unit; feeding at least a portion of the radar detections into a tracker module for producing track-specific feature data indicating a specific track in the scene, feeding at least a portion of the radar detections into a scene model comprising information about scene-specific features aggregated over time, and information indicating areas in the scene with expected ghost target detections and areas with expected real target detections, wherein at least a subset of the scene-specific features is determined from the radar detections; classifying the specific track as belonging to a real target or to a ghost target by relating the specific track to a position in the scene model.