Velocity estimation and angle offset correction in SAR images by performing image matching

A system for repetitively correcting a synthetic aperture radar (SAR) image captured by a first vehicle of a second vehicle while the first vehicle is in motion, the system comprising:

• a radar unit of the first vehicle obtaining an SAR image of the second vehicle;
• a camera unit obtaining a camera image of the second vehicle;
• a processor configured to:
• determine an association between at least one object in the SAR image and a corresponding at least one object in the camera image;
• correct a velocity estimation of the first vehicle based on the determined association;
• and
• adjust the SAR image based on the corrected velocity estimation.

A first vehicle for repetitively correcting a synthetic aperture radar (SAR) image while the first vehicle is in motion, the first vehicle comprising:

• a vehicle body;
• road wheels connected to the vehicle body;
• a radar unit capturing synthetic aperture radar (SAR) images;
• a camera capturing images;
• and
• a control system, wherein the control system is configured to:
• obtain an SAR image of a second vehicle via the radar unit;
• obtain a camera image of the second vehicle via the camera unit;
• determine an association between at least one object in the SAR image and a corresponding at least one object in the camera image;
• correct a velocity estimation of the first vehicle based on the determined association;
• and
• adjust the SAR image based on the corrected velocity estimation.