Method and Apparatus For Self Calibration of A Vehicle Radar System

摘要

A radar sensor for use within a vehicle includes self calibration functionality for performing angle calibrations for the sensor when the sensor is mounted within the vehicle. In at least one embodiment, the radar sensor collects information on stationary infrastructure around the vehicle for use in calibration operations. The infrastructure information may be used to generate a Doppler Monopulse Image (DMI) or other graph for the sensor. A clutter ridge within the DMI or other graph may then be analyzed to determine calibration data for the sensor.

主权项

1. A machine implemented method for use in self calibration of a radar sensor mounted to a vehicle, the method comprising:
collecting information on stationary structures in a vicinity of the vehicle using the radar sensor as the vehicle travels past the stationary structures; generating a graph that plots normalized Doppler against monopulse phase difference or monopulse angle based on range/Doppler bins in the collected information, wherein normalized Doppler includes a ratio of radial velocity Vr to host velocity Vh, the graph having a clutter ridge comprising points representative of the stationary structures; and analyzing the clutter ridge of the graph to identify signal strength peaks associated with different normalized Doppler values and using the peaks to generate calibration values for the radar sensor.