[특허]Angle extent estimation method for a motor vehicle object detection system

[미국특허] Angle extent estimation method for a motor vehicle object detection system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-017/10 G01S-013/00
출원번호	US-0968737 (1997-08-27)
발명자 / 주소	Alland Stephen William Searcy James Fredrick Wherry Kevin Ray
출원인 / 주소	Delphi Technologies, Inc.
대리인 / 주소	Funke
인용정보	피인용 횟수 : 105 인용 특허 : 8

초록 ▼

A method of operation for a motor vehicle object detection system is described, in which the extent angle of an identified target is accurately determined by applying a point source scatterer identification technique to data at the periphery of a composite return. Return amplitude data from one or more complete scans of the sensor beam are collected and compared with a target threshold to identify objects in the viewing angle, thereby forming an array of amplitude data associated with successive beam positions for each identified object. In each array, the left-most and right-most pair of amplitude data points associated with successive beam positions are selected and individually used to compute the angle of a point source scatterer which would be responsible for that data pair. The computed scatterer angles are taken as the left and right edges of the target and used to determine the angle extent of the identified object, which in turn, enables reliable determination as to whether the identified object is in or out of the vehicle travel path, and what, if any, vehicle response is appropriate to maintain a given headway or avoid a collision with the object.

대표청구항 ▼

[ What is claimed is:] [1.] In a motor vehicle object detection system having a sensor beam which is scanned back and forth through a viewing angle including a vehicle travel path, the system processing reflected beam energy to detect and respond to objects disposed in the travel path, a method of determining angular extent of an object comprising the steps of:processing energy return data from one or more complete scans of said sensor beam to identify objects in the viewing angle and to form an array of return amplitude data associated with successive beam positions for each identified object;selecting a first pair of return amplitude data associated with successive beam positions at a left-most edge of a selected array of return amplitude data, including left-most and next-to-left-most amplitude values;computing an angle of a point source scatterer which would be responsible for said first pair of return amplitude data by computing an amplitude ratio of said next-to-left-most amplitude value and said left-most amplitude value, and storing such angle as a left extent angle of a respective identified object;selecting a second pair of return amplitude data associated with successive beam positions at a right-most edge of the selected array;computing an angle of a point source scatterer which would be responsible for said second pair of return amplitude data, and storing such angle as a right extent angle of a respective identified object; anddetermining the overall extent angle of the respective identified object as an angle defined by the stored left and right extent angles.

이 특허에 인용된 특허 (8) 인용/피인용 타임라인 분석

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[미국특허] Angle extent estimation method for a motor vehicle object detection system 원문보기

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[미국특허] Angle extent estimation method for a motor vehicle object detection system 원문보기

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