Automotive radar sensor blockage detection system and...

Details Automotive radar sensor blockage detection system and... Automotive radar sensor blockage detection system and...

2011-07-05

2011-07-05

Tarcza, Thomas H (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Return signal controls radar system

Receiver

C342S104000, C342S118000, C342S147000, C342S175000

Reexamination Certificate

active

07973701

ABSTRACT:
A blockage detection system and method for use in a sensor such as a side object detection (SOD) sensor in an automotive radar system is described. The sensor emits signals and receives return signals (i.e. reflected signals) from a passing object. If the passing object is within a virtual detection zone, the sensor uses the information from the passing object to determine if a blockage condition exists in the sensor. The technique utilizes statistics related to the passing object to determine whether a blockage condition exists within the sensor. In one embodiment, a SOD sensor mounted in a first vehicle uses information from a second passing vehicle (e.g. radar return information) to determine whether a blockage condition exists within the SOD sensor itself.

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