Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent
1999-01-26
1999-12-28
Lobo, Ian J.
Communications, electrical: acoustic wave systems and devices
Echo systems
Distance or direction finding
367111, G01S 1596
Patent
active
060090448
ABSTRACT:
Two digital reflectional signals of different depth ranges are displayed on two divided pictures in a display, whereby the conditions of the water and the bottom in the lake or pond can be detected. Therefore, the fish sonar is suitable for fishing for black bass.
REFERENCES:
patent: 3742438 (1973-06-01), Brede et al.
patent: 4081783 (1978-03-01), Honda
patent: 4644511 (1987-02-01), Asakura et al.
patent: 4873676 (1989-10-01), Bailey et al.
Asakura Yoshiyuki
Goto Shigefumi
Maramatsu Yoshikazu
Moriyama Kenji
Okubo Yoshinobu
Honda Electronics Co., Ltd.
Lobo Ian J.
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