Synthetic aperture minimum redundancy sonar apparatus

Details Synthetic aperture minimum redundancy sonar apparatus Synthetic aperture minimum redundancy sonar apparatus

1990-02-07

1991-01-22

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Side scanning or contour mapping sonar systems

367 11, G01S 1500

Patent

active

049875639

ABSTRACT:
A sonar system including an elongated transducer having a fully populated or non-fully populated array of transducer elements. During course of travel of the carrier on which the transducer is mounted, successive acoustic transmissions take place whereupon the transducer elements provide output signals in response to the reflected energy. At least one synthetic aperture beam is formed by combining the element output signals from at least two successive transmissions wherein there is a predetermined gap between the array at a location at which a first transmission takes a location at which a subsequent transmission takes place.

REFERENCES:
patent: 4088978 (1978-05-01), Gilmour
Moffet, "Minimum-Redundancy Linear Arrays," IEEE Transactions on Antennas and Propagation, vol. AP-14, No. 2, Mar. 1988, pp. 172-175.
Wood et al., "Sparse Array Performance," J. Acoust. Soc. Am., vol. 63, No. 6, Jun. 1978, pp. 1866-1872.
Bedrosian, "Nonuniform Linear Arrays: Graph-Theoretic Approach to Minimum Redundancy," Proceedings of the IEEE, vol. 74, Jul. 1986, pp. 1040-1043.
Bucker, "Adaptive Cross-Sensor Beam Forming With Planar Arrays," J. Acoust. Soc. Am., vol. 62, No. 5, Nov. 1977, pp. 1222-1225.

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