[특허]Ranging system and method for determining the range of a vehicle from a plurality of reference points

[미국특허] Ranging system and method for determining the range of a vehicle from a plurality of reference points 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-013/87
출원번호	US-0875421 (1978-02-06)
발명자 / 주소	Heldwein Carl A. (San Diego CA) Jekel Richard N. (La Mesa CA) Sampson Stephen R. (San Diego CA) Zupan John T. (San Diego CA)
출원인 / 주소	Cubic Western Data (San Diego CA 02)
인용정보	피인용 횟수 : 54 인용 특허 : 3

초록 ▼

Systems and methods for determining the range from a vehicle to a plurality of reference points. In one system a mobile transceiver is located on the vehicle for transmitting a ranging interrogation signal pulse modulated on an RF carrier having a given frequency in response to a timing pulse and for receiving ranging response signal pulses modulated on RF carriers having the given frequency. A plurality of reference transponders are individually located at each of the plurality of reference points for receiving the timing pulse and the ranging interrogation signal pulse on a carrier having the given frequency and for responding thereto by transmitting a ranging response signal pulse on a carrier having the given frequency during an interval that is discrete from the intervals during which ranging response signal pulses are transmitted from the other reference transponders. Within a given time slot in relation to the timing pulse, a single ranging interrogation signal pulse is followed by a sequence of discrete ranging response signal pulses. A data processor determines and processes the phase of the received ranging response signal pulses in relation to the transmitted ranging interrogation signal pulse to determine the range from the vehicle to individual reference points, and processes the range determinations to determine the position of the vehicle by multilateration. The mobile transceiver, transponders, and transmitter each include an RF transmitter having a modulator circuit for modulating an RF carrier signal to have a predetermined shape envelope determined by the shape of a modulating signal.

대표청구항 ▼

A system for determining the range from a vehicle to a plurality of reference points, comprising a reference transmitter for transmitting a timing pulse; a mobile transceiver located on the vehicle for receiving the timing pulse and for transmitting a ranging interrogation signal pulse modulated on an RF carrier having a given frequency in response to the timing pulse, and for receiving ranging response signal pulses modulated on RF carriers having the given frequency; a plurality of reference transponders, one of which is located at each of the plurality of reference points for receiving the timing pulse and the ranging interrogation signal pulse on a carrier having the given frequency and for responding thereto by transmitting a ranging response signal pulse on a carrier having the given frequency during an interval that is discrete from the intervals during which ranging response signal pulses are transmitted from the other reference transponders, wherein within a given time slot in relation to the timing pulse, a single ranging interrogation signal pulse is followed by a sequence of the discrete ranging response signal pulses; and processing means located on the vehicle for determining and processing the phase of the received ranging response signal pulses in relation to the transmitted ranging interrogation signal pulse to determine the range from the vehicle to the individual reference points.

이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

Beasley T. James (Reseda CA), Method and system for navigation employing incremental range difference.
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Bruce Robert L. (San Diego CA), Single frequency radio ranging system.
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Schalow ; Rudolph D., Vehicle guidance system.
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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] Ranging system and method for determining the range of a vehicle from a plurality of reference points 원문보기