Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control
Patent
1969-08-26
1998-06-02
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Echo systems
Returned signal used for control
G01S 1500
Patent
active
057611548
ABSTRACT:
There is disclosed an exploder for an underwater weapon which periodically adiates an acoustic signal and activates the weapon only when the echo signal has the same phase as the radiated signal. Thus, echoes from any air-water interface are disregarded.
REFERENCES:
patent: 2908888 (1959-10-01), Kirkland
patent: 2943570 (1960-07-01), Puechberty
patent: 3017832 (1962-01-01), MacDonald
patent: 3031644 (1962-04-01), Hisserich et al.
patent: 3115833 (1963-12-01), Hall et al.
patent: 3360769 (1967-12-01), Lord
Cited by applicant on a paper dated: Aug. 1969.
Jilling Adam
Mueller William J.
Walsh Charles R.
Eipert William F.
Lall Prithvi C.
McGowan Michael J.
Pihulic Daniel T.
The United States of America as represented by the Secretary of
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