Ultrasonic Sensor Azimuth Calibration via Trilateration

The patent introduces a calibration object with known geometric characteristics as an intermediary element. This calibration object serves as a mediator between the ultrasonic sensors and the calibration process, enabling precise determination of sensor azimuth angles through trilateration based on measured distances to known object features.

The patent replaces traditional mechanical or manual calibration methods with a computational approach using trilateration mathematics. Instead of relying on physical alignment tools or manual adjustment mechanisms, the system uses distance measurements combined with geometric calculation to determine sensor positions and azimuth angles automatically.

The patent merges the calibration process of multiple ultrasonic sensors into a unified trilateration calculation framework. By combining distance measurements from multiple sensors to the same calibration object features, the system simultaneously determines the positions and azimuth angles of all sensors through a single integrated computational process.

The patent creates a universal calibration method that can be applied to all ultrasonic sensors in the array using the same trilateration approach. The calibration object and calculation procedure serve multiple sensors simultaneously, making the calibration process multi-functional rather than requiring separate calibration routines for each sensor.