Patent ID: 11940555
Assignee: ZF AUTOMOTIVE UK LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. A method of detecting misalignment, or checking for the correct alignment, of a radar apparatus for a stationary vehicle, the method comprising:
comparing first and second signal outputs from, respectively, a first 3 axis accelerometer fixed in position relative to a radar sensor of the radar apparatus and a second 3 axis accelerometer fixed in position relative to the vehicle when the radar sensor has a first position to determine any misalignment of the radar sensor for pitch or roll,
rotating the radar sensor about one of the X-axis and the Y-axis from the first position to a second position while the vehicle is stationary to intentionally cross-couple gravitational acceleration into one of the X-axis and the Y-axis;
generating third and fourth signal outputs from the respective first and second accelerometers when the radar sensor is in the second position; and
comparing the third and fourth signal outputs to determine any misalignment of the radar sensor for yaw.