Patent ID: 11914028
Assignee: HITACHI ASTEMO, LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A object detection device for detecting a distance of an object around a vehicle, the device configured to:
detect a first distance of an object in a first detection range;
detect a second distance of the object in a second detection range including at least a portion of the first detection range, wherein accuracy of the first distance is higher than accuracy of the second distance;
calculate an error quantity based on a comparison between the first and second distances of the object;
calculate a correction quantity for correcting the second distance of the object based on the error quantity;
correct the second distance of the object based on the correction quantity;
store the correction quantity;
update the correction quantity for each predetermined cycle by:
calculating a difference between the correction quantity stored at a previous time and the correction quantity stored at a latest time,
calculating the latest correction quantity by adding a value obtained by dividing the difference by an update gain that is 1 or more to the previous correction quantity, and
storing the latest correction quantity, and

correct the second distance of the object based on the stored latest correction quantity.