[특허]Radio ranging, navigation, and location system with correction for systematic errors

[미국특허] Radio ranging, navigation, and location system with correction for systematic errors 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-001/24
출원번호	US-0724393 (1985-04-18)
발명자 / 주소	Dano Paul K. (Euless TX)
출원인 / 주소	Del Norte Technology, Inc. (Euless TX 02)
인용정보	피인용 횟수 : 30 인용 특허 : 1

초록 ▼

A radio ranging system has at least one receiver which receives pulses over a direct path and over a longer delayed path from each of two or more fixed repeater stations. From the reception times of pulses which have traveled over these paths at different travel times from the fixed stations, a computer calculates the hyperbolic distances separating the passive receiver and the several fixed reference stations. By interchanging the roles of the various fixed stations, the computer compares the results of timing calculations of the same distances based on the different sets of data. From this comparison, the systematic timing errors of the system can be isolated and added or subtracted from the time measuring results, leaving differential time measurements without systematic error.

대표청구항 ▼

A radio ranging and navigation system comprising a plurality of stations at known geographical locations, an unlimited number of mobile receiver stations at independent locations, means in each of said known stations for enabing it to operate in a reference mode or a wing repeating mode, means for systematically shifting the modes of operation throughout said known stations, means responsive to a detection of signals sent after each of said shifting of said modes for detecting apparent distances between stations, means responsive to variations in said apparent distances for calculating systematic errors, and means responsive to said systematic errors for correcting said apparent distances to become true differential time measurements.

이 특허에 인용된 특허 (1) 인용/피인용 타임라인 분석

Dano Paul K. (Euless) Ko Eric C. (Carrollton), Pulse-hyperbolic location system using three passive beacon measurements.
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이 특허를 인용한 특허 (30) 인용/피인용 타임라인 분석

Irvin, David R.; Ramesh, Rajaram; Molnar, Karl, Cellular positioning system that compensates for received signal delays in positioning radio receivers.
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Dupray, Dennis J.; Karr, Charles L., Gateway and hybrid solutions for wireless location.
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Dupray,Dennis J.; Karr,Charles L., Geographic location using multiple location estimators.
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Dupray, Dennis J.; Goldberg, Sheldon F., Geographically constrained network services.
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Dupray, Dennis J.; Goldberg, Sheldon F., Geographically constrained network services.
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Dupray, Dennis J.; Goldberg, Sheldon F.; Leblanc, Frederick W.; Karr, Charles L., Locating a mobile station and applications therefor.
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Dupray, Dennis J; LeBlanc, Frederick W; Karr, Charles L; Goldberg, Sheldon F, Locating a mobile station and applications therefor.
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Leblanc, Frederick W.; Dupray, Dennis J.; Karr, Charles L., Locating a mobile station and applications therefor.
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Karr, Charles L; LeBlanc, Frederick W.; Dupray, Dennis J., Locating a mobile station using a plurality of wireless networks and applications therefor.
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Spratt, Michael P, Location determination using location data items received by short-range communication.
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Spratt,Michael P, Location determination using location data items received by short-range communication.
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LeBlanc Frederick W. ; Dupray Dennis J. ; Karr Charles L., Location of a mobile station using a plurality of commercial wireless infrastructures.
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Hawkes Kelly Davidson ; Koehler Jeffrey Lynn, Method and apparatus for mobile emitter location.
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Syrjarinne, Jari, Method for defining the error of reference time and an electronic device.
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Harri Valio FI; Jari Syrjarinne FI, Method for determining reference time error and an electronic device.
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Goddard Robert B. (Stoneham MA), Methods of and apparatus for measuring time of arrival of remote Loran-C and related signals and effective time of trans.
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Dupray,Dennis J., Multiple evaluators for evaluation of a purality of conditions.
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Dupray, Dennis J.; Karr, Charles L., Multiple location estimators for wireless location.
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Dupray, Dennis J.; Goldberg, Sheldon F., Network services dependent upon geographical constraints.
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Dupray, Dennis J., Platform and applications for wireless location and other complex services.
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Stephens,Scott Adam, Positioning system with intentional multi-path signal.
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Dupray, Dennis J., Real estate transaction system.
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Karr, Charles L.; Dupray, Dennis J., System and method for hybriding wireless location techniques.
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Hawkes Kelly D. ; Koehler Jeffrey L., Time difference of arrival measurement system.
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Dupray, Dennis J., Wireless location gateway and applications therefor.
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Dupray, Dennis J.; Karr, Charles L., Wireless location using location estimators.
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Dupray Dennis J., Wireless location using multiple location estimators.
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Karr, Charles L.; Dupray, Dennis J., Wireless location using multiple mobile station location techniques.
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Dupray, Dennis J.; Karr, Charles L.; Goldberg, Sheldon F., Wireless location using network centric location estimators.
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Karr, Charles L.; Dupray, Dennis J., Wireless location using signal fingerprinting and other location estimators.
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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] Radio ranging, navigation, and location system with correction for systematic errors 원문보기