Guided underwater object

Details Guided underwater object Guided underwater object

2007-03-13

2007-03-13

Lobo, Ian J. (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Underwater system

Remote control

C367S138000

Reexamination Certificate

active

10938415

ABSTRACT:
A guided underwater object (GUO) (100) comprises steering means, an on-board guidance system (200) for controlling the steering means, and a hydrophone unit or units (104A,104B,104C,104D,104E,104F,104G,104H) arranged to pass signals induced therein by an acoustic guiding beam to the on-board guidance system to effect directional control of the self-propelled underwater object. The GUO is guided by a remote guidance system characterized by a plurality of transmitter arrays (402A,402B,402C,402D;412A,412B,412C,412D;422P,422Q,422R) arranged to transmit a plurality of contiguous acoustic beams (302A,302B,302C,302D) each having a different frequency or frequency chirp (or other acoustic signal coding) and enclosing a guidance corridor of lower sound level (‘null’) (304) extending approximately in the direction of propagation of the acoustic beams and defining a flight path of the object. The GUO requires no on-board search sensors, no communications link with the guidance system and is of low cost.

REFERENCES:
patent: 3723957 (1973-03-01), Damon
patent: 4372239 (1983-02-01), Hagelberg et al.
patent: 5436874 (1995-07-01), Kuhn et al.
patent: 6802236 (2004-10-01), Richardson
patent: 2279529 (1995-01-01), None
patent: 57-000714 (1982-01-01), None
Search Report from UK Patent Office of Application No. GB 03211216.6.

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