Communications – electrical: acoustic wave systems and devices – Distance or direction finding – With time interval measuring means
Patent
1992-07-17
1994-04-12
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Distance or direction finding
With time interval measuring means
367910, G01S 380
Patent
active
053032063
ABSTRACT:
The invention provides a method and apparatus for determining the combination of distance and relative direction between two locations in a fluid medium. This is accomplished by transmitting a first periodic signal from a first device located at a first location within the fluid medium, receiving the first periodic signal by two or more receivers displaced about the periphery of the second device, wherein one of the receivers receives the signal before the periodic signal is received by any other receiver, initially synchronizing in time the first periodic signal with a second periodic signal generated by the second device, wherein the synchronizing occurs when the first and second devices are proximate one another, at any time thereafter, determining the distance between the first and second devices by measuring a time difference between the first periodic signal, which continues to be received by the second device, relative to the second periodic signal generated by the second device, where the time difference is related to the distance between the first and second devices; and, determining which of the receivers first received the signal, wherein the determining also aids in determining the relative direction between the first and second devices.
REFERENCES:
patent: 2515472 (1950-07-01), Rich
patent: 3005183 (1961-10-01), Mayes
patent: 3068470 (1962-12-01), Werner
patent: 3286224 (1966-11-01), Zefting
patent: 3505638 (1970-04-01), Watson
patent: 3559161 (1971-01-01), Raudsep
patent: 3713087 (1973-01-01), Bauer
patent: 3715577 (1973-02-01), Bohman
patent: 3747057 (1973-07-01), Brougher
patent: 3789353 (1974-01-01), Hunter
patent: 3838593 (1974-10-01), Thompson
patent: 3887896 (1975-06-01), Ramstedt
patent: 3916410 (1975-10-01), Elwood
patent: 3944967 (1976-03-01), Acks et al.
patent: 4516226 (1985-05-01), Peynaud et al.
patent: 4894810 (1990-01-01), Jukkala
patent: 5185725 (1993-02-01), Kent et al.
Bemb Richard
Crovella Edward
Pihulic Daniel T.
Simpson Robert P.
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