[특허]Method of measuring elevational mis-alignment of an automotive radar sensor

[미국특허] Method of measuring elevational mis-alignment of an automotive radar sensor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-007/40
출원번호	US-0078872 (2002-02-19)
발명자 / 주소	Searcy, James Fredrick Hart, David Leo Alland, Stephen William
출원인 / 주소	Delphi Technologies, Inc.
대리인 / 주소	Sigler, Robert M.
인용정보	피인용 횟수 : 12 인용 특허 : 5

초록 ▼

A method of measuring elevational misalignment of an automotive radar sensor in a factory or service setting utilizes two or more targets that can be discriminated by the radar system. The targets are positioned at different elevational angles with respect to the desired elevation axis, and the degree of elevational misalignment is determined according to the ratio or difference in return signal amplitude for the two targets. Discrimination of the targets may be ensured by differences in range, azimuth angle or Doppler. Since the amplitude difference is a measure of misalignment, the measurement may be used to verify proper alignment or to indicate the amount of adjustment required to achieve proper alignment.

대표청구항 ▼

1. A method of determining elevational misalignment of a radar sensor with respect to a desired elevation angle comprising the steps of: positioning first and second distinguishable targets in a target detection zone of said sensor but at different elevation angles with respect to said desired elevation angle; activating said radar sensor to emit radar energy in said target detection zone and to detect first and second return energy signals corresponding to said first and second targets; determining magnitudes of said first and second return energy signals and forming an alignment value according to a ratio or difference of said magnitudes; and determining the elevational misalignment of said radar sensor based on a comparison of said alignment value with a reference value that occurs when said radar sensor is aligned with said desired elevation angle. 2. The method of claim 1, wherein said first and second targets are distinguishable by their range from said radar sensor. 3. The method of claim 1, wherein said first and second targets are distinguishable by differences in azimuth angle with respect to an azimuth alignment of said radar sensor. 4. The method of claim 1, wherein said first and second targets are transponders that emit different frequencies when said radar sensor emits radar energy, and said first and second targets are distinguishable by their emitted frequencies. 5. The method of claim 1, wherein said first and second targets are oppositely positioned about said desired elevation angle. 6. The method of claim 5, wherein said radar sensor emits radar energy in a beam having a nominal beam width, and said first and second targets differ from said desired elevation angle by approximately one-half said nominal beam width. 7. The method of claim 1, wherein a magnitude and a direction of said elevational misalignment is determined based on said comparison of said alignment value with said reference value.

이 특허에 인용된 특허 (5) 인용/피인용 타임라인 분석

Martin I. Grace ; Ramzi Abou-Jaoude ; Karam Noujeim, Automotive radar antenna alignment system.
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Bai Jie,JPX ; Nakamura Mitsuru,JPX ; Hanawa Kazuhiko,JPX ; Monji Tatsuhiko,JPX ; Takano Kazuaki,JPX ; Sato Noriharu,JPX, Car on-board radar axis adjusting method.
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Jean-Fran.cedilla.ois Henrio FR; Jean-Paul Artis FR, Method and device for the alignment of an automobile radar.
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Hfgen Gnter (Kornwestheim DEX), Monitoring system for scanning-beam microwave landing apparatus.
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Grace Martin I. ; Bradley Donald A., Universal autoradar antenna alignment system.
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이 특허를 인용한 특허 (12) 인용/피인용 타임라인 분석

Jeong, Seong-hee, Apparatus and sensor for adjusting sensor vertical alignment.
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Schiffmann, Jan K.; Liu, Yu; Schwartz, David A.; Zhu, Xumin, Automated vehicle radar system with auto-alignment for azimuth, elevation, and vehicle speed-scaling-error.
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Lee, Jae Seung; Schmalenberg, Paul Donald, Calibration method for automotive radar using phased array.
상세보기
Treptow, Andre; Bechler, Dirk; Kuehnle, Goetz; Gross, Volker, Determination of an elevation misalignment angle of a radar sensor of a motor vehicle.
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Dybdal, Robert B.; Pidhayny, Denny D., Main beam alignment verification for tracking antennas.
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Dybdal, Robert B.; Pidhayny, Denny D., Main beam alignment verification for tracking antennas.
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Hayakawa, Eisuke, Radar apparatus.
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Fujita,Akihisa, Radar device for vehicle and method for adjusting mount angle for mounting radar device on vehicle.
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Wang, Hanching Grant; Fowell, Richard A.; Nayak, Arunkumar P., Reflector deployment error estimation.
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DeMersseman, Bernard; Lee, Kangwon, Sensing misalignment detection and estimation system.
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Deasy,Kevin M.; Ansari,Adil, Sensor alignment detection method for an infrared blind-zone sensing system.
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Zoratti, Paul Kirk; Bochenek, Jeffrey Allen; Attard, Joseph Charles; Wright, Ammon Keefe; Anson, Terry Joseph, Sensor alignment method and system.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Method of measuring elevational mis-alignment of an automotive radar sensor 원문보기