Depth sounder with object identification feature

Details Depth sounder with object identification feature Depth sounder with object identification feature

1998-05-08

1999-07-27

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367 87, G01S 1596

Patent

active

059302003

ABSTRACT:
A sonar depth sounder device, and a method for processing echo signals reflected from objects within a body of water, utilize a processor, a memory, a display, and a keypad connected to the processor. A transmitter excites a transducer which emits sonar pulses into a body of water, and a receiver receives reflected sonar echo signals. Particularly, signals that have reflected from an object suspended in the water have an intensity, a history time duration, and a depth spreading characteristic. The processor compares one or more of the intensity, history time duration, and depth spreading characteristic of the reflected signals with corresponding sets of parameters stored in memory, which sets of parameters are representative of one or more selected objects, cross-talk noise, and unidentifiable noise. Upon interpretation of the reflected signals, the processor displays an icon, on the display, representative of the identified object, or rejects the signals as cross-talk noise and therefore does not display data indicative of the reflected signals, or upon the determination that the reflected signals are indicative of unidentifiable noise, processes data to prevent it from being displayed on the display.

REFERENCES:
patent: 4081783 (1978-03-01), Honda
patent: 4777630 (1988-10-01), Burns
patent: 4829492 (1989-05-01), Choi et al.
patent: 4943951 (1990-07-01), Leavell et al.
patent: 5099455 (1992-03-01), Parra
patent: 5184330 (1993-02-01), Adams et al.
patent: 5327398 (1994-07-01), Wansley et al.

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