Range determining system

Details Range determining system Range determining system

1978-08-03

1980-02-05

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With beam steering, scanning, or focussing

367905, G01S 380

Patent

active

041874900

ABSTRACT:
Discrimination of long range targets from short range targets is provided by generating a vertical dipole beam and a narrow uni-directional horizontal beam which may be steered. Targets in the dipole beam are short range targets whose acoustic signals arrive at angles to the horizontal plane, whereas long range targets are those in the horizontal beam, since acoustic signals from long range targets come in on the horizontal plane.

REFERENCES:
patent: 3541501 (1970-11-01), Mikina et al.
patent: 3579181 (1971-05-01), Massa
patent: 4003015 (1977-01-01), Pipkin

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