SYSTEMS AND METHODS FOR IN-CABIN SENSOR CALIBRATION
Methods and systems for calibrating in-cabin vehicle sensors, such as in-cabin RADAR sensors. In some implementations, the method may comprise detecting a calibration target positioned within a cabin of a vehicle using an in-cabin vehicle sensor. One or more locational parameters of the calibration target relative to the in-cabin vehicle RADAR sensor may then be measured. The in-cabin vehicle sensor may then be calibrated by comparing the detected locational data with predetermined locational data of the calibration target within the vehicle.
1 . A method for calibrating an in-cabin vehicle RADAR sensor, the method comprising the steps of:
detecting a calibration target positioned within a cabin of a vehicle using an in-cabin vehicle RADAR sensor;
measuring one or more locational parameters of the calibration target relative to the in-cabin vehicle RADAR sensor; and
calibrating the in-cabin vehicle RADAR sensor using predetermined locational data of the calibration target within the vehicle.
2 . The method of claim 1 , further comprising:
before the step of detecting the calibration target, temporarily placing the calibration target within the vehicle; and
following the step of calibrating the in-cabin vehicle RADAR sensor, removing the calibration target from the vehicle.
3 . The method of claim 2 , wherein the calibration target comprises a coupling piece configured to facilitate temporary placement of the calibration target to a respective component of the vehicle.
4 . The method of claim 1 , wherein the calibration target comprises a corner reflector.
5 . The method of claim 1 , further comprising:
detecting a second calibration target positioned within the cabin of the vehicle using the in-cabin vehicle RADAR sensor; and
measuring one or more locational parameters of the second calibration target relative to the in-cabin vehicle RADAR sensor, wherein the step of calibrating the in-cabin vehicle RADAR sensor further comprises using predetermined locational data of the second calibration target within the vehicle.
6 . The method of claim 1 , wherein the calibration target comprises a permanent fixture within the vehicle.
7 . The method of claim 1 , wherein the calibration target comprises a speaker, and wherein the step of calibrating the in-cabin vehicle RADAR sensor is performed with the speaker vibrating at a predetermined frequency.
8 . The method of claim 1 , further comprising:
detecting a second calibration target positioned within the cabin of the vehicle using a second in-cabin vehicle RADAR sensor;
measuring one or more locational parameters of the second calibration target relative to the second in-cabin vehicle RADAR sensor; and
calibrating the second in-cabin vehicle RADAR sensor using predetermined locational data of the second calibration target within the vehicle.
9 . The method of claim 1 , further comprising sending the predetermined locational data of the calibration target to the in-cabin RADAR sensor from a calibration console.
10 . A method for calibrating an in-cabin vehicle RADAR sensor, the method comprising the steps of:
initiating a calibration mode of the in-cabin vehicle RADAR sensor;
detecting a first calibration target positioned within a cabin of a vehicle;
detecting a second calibration target positioned within the cabin of the vehicle;
calculating bias parameters associated with the first calibration target and/or the second calibration target; and
calibrating the in-cabin vehicle RADAR sensor using the calculated bias parameters.
11 . The method of claim 10 , wherein the first calibration target comprises a boresight calibration target oriented along a boresight of the in-cabin vehicle RADAR sensor.
12 . The method of claim 10 , wherein the first calibration target is positioned at an at least substantially central location within the cabin of the vehicle, and wherein the second calibration target is positioned on a driver-side seat of the vehicle.
13 . The method of claim 10 , wherein the first calibration target and/or the second calibration target comprises a speaker.
14 . A system for calibrating an in-cabin vehicle RADAR sensor, comprising:
an in-cabin RADAR sensor positioned within a cabin of a vehicle;
a first calibration target positioned within the cabin of the vehicle; and
a calibration module configured to process calibration data obtained using the first calibration target and calibrate the in-cabin RADAR sensor.
15 . The system of claim 14 , wherein the first calibration target comprises a permanent fixture within the vehicle.
16 . The system of claim 14 , further comprising:
a second calibration target positioned within the cabin of the vehicle; and
a second in-cabin RADAR sensor positioned within the cabin of the vehicle.
17 . The system of claim 14 , wherein the calibration module is configured to detect calibration parameters of the first calibration target using the in-cabin RADAR sensor and compare stored calibration parameters of the first calibration target with the detected calibration parameters to calibrate the in-cabin RADAR sensor.
18 . The system of claim 17 , wherein the stored calibration parameters are stored within a memory component of the vehicle.
19 . The system of claim 14 , wherein the calibration parameters comprise a range, azimuth, and elevation of the first calibration target relative to the in-cabin RADAR sensor.
20 . The system of claim 14 , wherein the first calibration target comprises a vibrating calibration target, and wherein the vibrating calibration target is configured to vibrate at a preconfigured vibrational frequency to facilitate calibration of the in-cabin RADAR sensor.