Overlap correlator synthetic aperture processor

Details Overlap correlator synthetic aperture processor Overlap correlator synthetic aperture processor

1989-06-30

1990-05-29

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With towing

367106, G01S 380

Patent

active

049301110

ABSTRACT:
A means for extending the useful aperture of a multi-hydrophone towed array by using the overlap of the successive positions of the array hydrophones as the array moves forward through the water. The overlap information is used by an overlap correlator to provide phase correction factors for a synthetic aperture signal processing scheme. The overlap correlator continues to refine the correction factors using later in time hydrophone measurement data.

REFERENCES:
patent: 3895381 (1975-07-01), Kock
patent: 4088978 (1978-05-01), Gilmour
Williams, R. E., "Creating an Acoustic Synthetic Aperture in the Ocean," rnal of the Acoust. Soc. of America, vol. 60, pp. 60-73, 1976.
Brook, H. W., "Temporal and Spatial Fluctuations in Single-Path Underwater . . . " Journal Acoust. Soc. America, vol. 72, 1982.
Koenigs, P. D. et al., "A Further Study of the Space and Time Stability of a Narrow Band Acoustic Signal . . . " Nusc. Tech. Document, #6605,21, Dec. 1981.

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