US 12,276,722 B2
Multipath classification in radar detections
Anders Mannesson, Lund (SE); André Nüsslein, Lund (SE); Anton Sedin, Lund (SE); Aras Papadelis, Lund (SE); Daniel Ståhl, Lund (SE); David Wadmark, Lund (SE); Sebastian Heunisch, Lund (SE); and Stefan Adalbjörnsson, Lund (SE)
Assigned to AXIS AB, Lund (SE)
Filed by Axis AB, Lund (SE)
Filed on May 19, 2022, as Appl. No. 17/748,223.
Claims priority of application No. 21175394 (EP), filed on May 21, 2021.
Prior Publication US 2022/0373672 A1, Nov. 24, 2022
Int. Cl. G01S 13/88 (2006.01); G01S 13/72 (2006.01)
CPC G01S 13/886 (2013.01) [G01S 13/72 (2013.01); G06F 2218/12 (2023.01)] 13 Claims
OG exemplary drawing
 
1. A method for classifying tracks in radar detections of a scene acquired by a stationary radar unit statically mounted for surveillance of the scene, the method comprising:
acquiring radar detections of the scene using the stationary radar unit;
processing at least a portion of the radar detections to produce 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 of the scene aggregated over time including information about detected objects and prior detected tracks from both ghost targets and from real targets of the scene detected by the statically mounted stationary radar, and information indicative of areas in the scene with expected ghost target detections and areas with expected real target detections detected by the statically mounted stationary radar, wherein at least a subset of the scene-specific features is determined from the radar detections from the statically mounted stationary radar; and
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;
assigning the specific track with scene-specific features based on a determined position of the specific track in the scene; and
adding at least one of the specific track and the scene-specific features assigned to the specific track to the scene model to adapt the scene model to a changing scene.