[특허]Method for measuring distance and position using spectrum signal, and an equipment using the method

[미국특허] Method for measuring distance and position using spectrum signal, and an equipment using the method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-013/08
출원번호	US-0640018 (2000-08-17)
우선권정보	JP-0197863 (2000-06-27)
발명자 / 주소	Katsuhiko Tsunehara JP Nobukazu Doi JP Mikio Kuwahara JP Tomoaki Ishifuji JP
출원인 / 주소	Hitachi, Ltd. JP
대리인 / 주소	Mattingly, Stanger & Malur, P.C.
인용정보	피인용 횟수 : 44 인용 특허 : 5

초록 ▼

Under a multi-path environment, the receive timing for an incoming wave of the minimum propagation delay time cannot be accurately measured in the prior art. By using the delay profile created by delay profile creating section 102 and the first threshold value 330 received from the first threshold value calculation section 105, the first threshold value timing detection section 103 selects only the earliest receive timing exceeding the first threshold value, from all the timings that the correlation value in the delay profile becomes a maximum. By using the receive timing and the second threshold value 331 received from the second threshold value calculation section 107, the reference timing calculation section 106 selects the reference timing required for calculating the receive timing for the incoming wave of the minimum propagation delay time. The timing delayed by a previously set timing behind said reference timing is sent from the receive timing calculation section 108 as the receive timing 113 of the incoming wave of the minimum propagation delay time.

대표청구항 ▼

1. A method for measuring distance comprising:a first step to create a delay profile from a signal wave received from a signal transmitting station; a second step to detect a startup timing of the delay profile as reference timing, wherein the startup timing corresponds to a timing when a correlation value of the delay profile is equal to a predetermined threshold value; and a third step to detect a timing delay by a predetermined value behind the reference timing as a receive timing for the signal wave; wherein the distance between the signal transmitting station and signal receiving station is measured from a difference between a transmitting timing of said signal transmitting station and the receive timing.

이 특허에 인용된 특허 (5) 인용/피인용 타임라인 분석

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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 for measuring distance and position using spectrum signal, and an equipment using the method 원문보기