Sonar array post processor

Details Sonar array post processor Sonar array post processor

1997-11-28

1999-06-22

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With beam steering, scanning, or focussing

367103, G01S 386

Patent

active

059149124

ABSTRACT:
The sonar array post processor employs an adaptive processing, known as matched beam processing, in the beam domain which takes analog or digital conventional beamforming outputs from a sonar array, multiplies them by a set of adaptive weighting coefficients and produces a new set of beams. The new output beam of highest intensity yields the ideal maximum signal gain and correct target bearing. Continuous target tracking provided by the sonar array post processor in the endfire direction of a horizontal line array minimizes the towing ships maneuvers and for, a bottom mounted surveillance system, a smaller number of arrays are required.

REFERENCES:
patent: 4420825 (1983-12-01), Maynard et al.
patent: 5539832 (1996-07-01), Weinstein et al.
patent: 5563849 (1996-10-01), Hall et al.
patent: 5581495 (1996-12-01), Adkins et al.
patent: 5680371 (1997-10-01), Miklovic
Feuillade; Environmental Mismatch in Shallow-water Matched-Field Processing, Geo Acoustic parameter variability, J. Acoust., Sec. Am. View 85, No. 6, pp. 2359-2364, Jun. 1989.
Ozard; Matched Field processing in shallow water for Range, Depth, and Bearing Determination: Results of Experiment and Simulation, J. Acous. Soc. Am; vol. 86, No. 2, pp. 744-753, Aug. 1989.
Yang; Modal Shading Coefficients for High-resolution Source Depth, Localization; J. Acoust. Soc Am.; vol. 87, No. 2, pp. 668-672, Feb. 1990.
Del Balzo; Effects of Water Depth Mismatch on Matched-field Localization in Shallow Water, J. Acoust. Soc Am.; vol. 83, No. 6, pp. 2180-2185; Jun. 1988.
Hanson et al., Environmental and System Effect on Source Localization in Shallow Water by the Matched-Field Processing of a Vertical Array; J. Acoust. Soc Am.; vol. 86, No. 5, pp. 1950-1959; Nov. 1989.
Knobles et al., Broadband Localization by Matched Fields in Range and Bearing in Shallow Water; J. Acoust Soc. Am; pp. 1813-1820; Sep. 1994.
Hanson; The Theoretical Responses of Vertical and Horizontal Line Arrays to Wind-Induced Noise in Shallow Water; J. Acoust. Soc. Am.; vol. 78, No. 5, pp. 1702-1712; Nov. 1985.
Ingenito; Scattering from an Object in a Stratified Medium; J. Acoust. Soc. Am.; vol. 82, No. 6, pp. 2051-2059; Dec. 1987.
Buckner; Use of Calculated Sound Fields and Matched-Field Detection to Locate Sound Sources in Shallow Water; J. Acoust. Soc. Am.; vol. 59, No. 2; pp. 368-373; Feb. 1986.
Shang; An Efficent High-Resolution Method of Source Localization Processing to Mode Space; J.Acoust. Soc. Am.; vol. 86, No. 5, pp. 1960-1964; Nov. 1989.
Knobles et al.; A Time Series Analysis of Sound Propagation in a Strongly Multipath Shallow Water Environment with an Adiabatic Normal Mode Approach; IEEE J. Ocean Engr.; vol. 21, No. 1; pp. 1-13; Jan. 1996.
Yang et al.; Acoustic Inversion of Bottom Reflectivity and Bottom Sound-Speed Profile; IEEE J Ocean Engr.; vol. 21, No. 4, pp. 367-376; Oct. 1996.
Porter et al.; A Numerical Method for Ocean-Acoustic Normal Modes; J. Acoust. Soc. Am.; vol. 76, No. 1.; pp. 244-252; Jul. 1984.
Gingras et al., Inversion for Geometric and Gec Acoustic Parameters in Shallow Water; Experimental Results; J. Acoust. Soc. Am.; vol. 97, No. 6; pp. 3589-3598; Jun. 1995.
Porter; The Kraken Normal Mode Program; Na. Res. Lae. Rpt. No: NRL/MR/5120-92-6920, May 1992.

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