Self-calibration device and self-calibration method for vehicle radar
AssigneeLG Innotek Co., Ltd.
InventorDong Chan Park
Life of this patent
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Abstract
A self-calibration device for a vehicle radar, according to one embodiment of the present invention, comprises: a transmission part for outputting a transmission signal to a reflection plate disposed at the front of a vehicle; and a reception part for receiving a reception signal reflected by the reflection plate, wherein the reception part comprises: a phase correction part for correcting a phase of the reception signal; and an angle calculation part for setting the corrected phase as a reference value.
Claims12
A self-calibration device for a vehicle radar installed at a front of a vehicle, the self-calibration device comprising:
- a transmission part to output a transmission signal to a reflection plate disposed at the front of the vehicle;
- and
- a reception part to receive a reception signal reflected by the reflection plate, the reception part comprising:
- a first receiver to receive a first reception signal;
- a second receiver to receive a second reception signal;
- a first phase comparator to compare a phase of the first reception signal with a phase of the second reception signal;
- a first phase correction part to correct the phase of the second reception signal based on a tilting angle of the second receiver by confirming the tilting angle of the second receiver from a comparison result of the first phase comparator and to correct the phase of the second reception signal such that the second reception signal has the phase equal to the first reception signal;
- an angle calculation part to set the corrected phase as a reference value;
- and
- a control part to analyze a parking image photographed by a vehicle camera and to determine whether the vehicle is parked parallel to a parking line, wherein the first phase correction part corrects the phase of the second reception signal based on the parking image photographed by the vehicle camera and the determining whether the vehicle is parked parallel to the parking line by analyzing the parking image.
A self-calibration method for a vehicle radar, the self-calibration method comprising:
- outputting a signal toward a reflection plate by a radar installed at a front of a vehicle;
- reflecting the signal by the reflection plate;
- comparing a phase of a first reception signal received in a first receiver of the radar with a phase of a second reception signal received in a second receiver of the radar;
- determining that the second receiver is tilted when the phase of the first reception signal is different from the phase of the second reception signal;
- correcting the phase of the second reception signal such that the second reception signal has the phase equal to the phase of the first reception signal when it is determined that the second receiver is tilted;
- photographing a parking image by a vehicle camera;
- determining whether the vehicle is parked parallel to a parking line by analyzing the parking image;
- and
- correcting the phase of the second reception signal based on the parking image photographed by the vehicle camera and the determining whether the vehicle is parked parallel to the parking line by the analyzing the parking image.
Dependencies are inferred from the claim text.