Array system with high resolving power

Details Array system with high resolving power Array system with high resolving power

1982-09-28

1985-04-09

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

367105, 367154, 367905, 04R 132, G01S 1502

Patent

active

045105863

ABSTRACT:
An array with high resolving power and low secondary lobe levels, comprising a receiving array formed of transducers along its length L.sub.R, two of these transducers, separated by a distance L.sub.E, also forming the transmitters. The change from transmission to reception and back is effectuated by switches. Signals received by transducers are weighted by resistors before being delivered to beam forming circuits, containing multi-terminal phase shifters and a wiring matrix and adders. The weighting function and ratio L.sub.E /L.sub.R are chosen to ensure that the overall transmission-reception system diagram has high resolving power and low secondary lobe levels.

REFERENCES:
patent: 4234939 (1980-11-01), Grall

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