Tool for automatic multiple radar calibration

An apparatus for determining a distance between a first radar system disposed on a vehicle and a second radar system disposed on the vehicle, comprising:

• a track that is disposed parallel to a baseline of the first radar system and the second radar system and intercepts a perpendicular bisector of the baseline;
• a target reflector that moves along the track;
• and
• a processor coupled to the first radar system and the second radar system, the processor configured to:
• obtain a direct range measurement for at least one of the first radar system and the second radar system and a bistatic range measurement between the first radar system and the second radar system when the target reflector is located at an intersection of the perpendicular bisector and the track, and
• determine the distance between the first radar system and the second radar system using the direct range measurement, the bistatic range measurement and a radial length of the target reflector.

A method of measuring a distance between a first radar system disposed on a vehicle and a second radar system disposed on the vehicle, comprising:

• disposing a track parallel to a baseline connecting the first radar system and the second radar system;
• moving a target reflector along the track to a selected location at which the target reflector intersects the perpendicular bisector of a baseline;
• obtaining a direct range measurement for at least one of the first radar system and the second radar system and a bistatic range measurement between the first radar system and the second radar system;
• and
• determining the distance between the first radar system and the second radar system using the direct range measurement, the bistatic range measurement and a radial length of the target reflector.