Patent ID: 6445285
Filing Date: 2002-09-03
Classification: B60Q

Abstract:
A method of detecting objects within a detection field, the detection field extending in one direction above a ground plane and from a surface of a motor vehicle, the method comprising the steps of:dividing the detection field of one sensor into a first sub-field in the one direction and a second sub-field in the one direction; illuminating the first sub-field with a first energy emission for at least a first receiver enable period; disregarding the first sub-field from the first energy emission during a first receiver blanking period; receiving during the first receiver enable period, an energy return as a result of the first energy emission; determining a presence of an object in the first sub-field; illuminating the second sub-field with a second energy emission different than the first energy emission for a second receiver enable period; disregarding the second sub-field from the second energy emission during a second receiver blanking period; receiving during the second receiver enable period, an energy return as a result of the second energy emission; and determining a presence of an object in the second sub-field.