What are the 4 Dimensions?
Explain range, azimuth, velocity and elevation using a moving vehicle point cloud.
4D radar provides range, azimuth, velocity and elevation, allowing the system to continuously track vehicles in three-dimensional space even during lane changes, camera occlusion and mixed traffic movement.
Distance from radar to vehicle, enabling precise longitudinal location before, under and after the gantry.
Horizontal angle, used to associate the object with a lane or lane boundary region.
Doppler speed, enabling speed measurement and prediction of where the object will be at capture time.
Vertical angle or height dimension, improving separation of vehicles, overhead structures and complex occlusions.
A tag read alone does not prove which vehicle owns the transaction. A plate image alone can fail in rain, glare or occlusion. 4D radar maintains a motion track, then Rassa’s fusion layer links that track with RFID, ANPR and LiDAR evidence.
Radar creates object points from moving vehicles.
Points are grouped into vehicle candidates.
Motion model predicts each vehicle over time.
RFID, ANPR and LiDAR evidence are linked to the track.
Vehicle class is inferred from track, size and sensor evidence.
A toll event is generated with confidence score and audit trail.
Explain range, azimuth, velocity and elevation using a moving vehicle point cloud.
Show a vehicle moving from lane two to lane three while identity is preserved.
Show a truck blocking the camera while radar continues tracking the hidden car.
Compare radar signatures for motorcycle, car, bus, truck and multi-axle vehicles.