Communications – electrical: acoustic wave systems and devices – Distance or direction finding – With electromagnetic wave
Patent
1989-12-07
1991-02-05
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Distance or direction finding
With electromagnetic wave
G01S 380
Patent
active
049911490
ABSTRACT:
Propagation of modulated radiation from a platform is substantially limited o unidirectional transmission through a body of water. Acoustical energy is generated at the surface of a remote object submerged in the water in response to impingement and absorption of the modulated radiation from the platform. Radiation of the acoustical energy generated adjacent the object is detected at the platform to extract data therefrom from which the location of the object relative to the platform is indicated.
REFERENCES:
patent: 4156136 (1979-05-01), Strum et al.
patent: 4169662 (1979-10-01), Kaule et al.
patent: 4329876 (1982-05-01), Chen et al.
patent: 4379409 (1983-04-01), Primbsch et al.
patent: 4473896 (1984-09-01), Loeser et al.
patent: 4717862 (1988-01-01), Anderson
Pihulic Daniel T.
Shuster Jacob
Tarcza Thomas H.
The United States of America as represented by the Secretary of
Walden Kenneth E.
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