Communications – electrical: acoustic wave systems and devices – Distance or direction finding – With beam steering – scanning – or focussing
Patent
1998-08-13
1999-12-28
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
060090456
ABSTRACT:
The advanced vertical array beamformer signal processor accomplishes acoustic beamforming of an underwater vertical array used in shallow water utilizing matched beam processing to suppress generated noise and/or ship radiated noise thereby increasing the detectability of a submerged source emitting only a low noise signal. The processor exploits the difference of the signal arrival angle of both active and passive signals with that of the wind generated noise and ship radiated noise which is prominent in downward refractive sound speed profiles. After filtering the undesired noise, the processor uses the depth of the source as a clue for detection; the processor is an energy detector focused on the returns of a deep source.
REFERENCES:
patent: 3701147 (1972-10-01), Whitehouse
patent: 3766496 (1973-10-01), Whitehouse
patent: 4315326 (1982-02-01), Chase
patent: 4420285 (1983-12-01), Maynard et al.
patent: 5539836 (1996-07-01), Weinstein et al.
patent: 5563849 (1996-10-01), Hall et al.
patent: 5581495 (1996-12-01), Adkins et al.
patent: 5914912 (1999-06-01), Yang
Hanson; The Theoretical Response of Vertical and Horizontal Line Arrays to ind Induced Noise in Shallow Water; J.Acous.Soc.Am. vol. 78, No. 5, pp. 1702-1712, Nov. 1985.
Yang; Modal Shading Coefficients for High-Resolution Source Depth Localization; J.Acous.Soc.Am. vol. 87, No. 2, pp. 668-672, Nov. 1987.
Yang; A Method of Range and Depth Estimation by Modal Decomposition; J.Acous.Soc.Am. vol. 82, No. 5, pp. 1736-1745, Nov. 1987.
Tabrikian et al.; Robust Maximum-Liklihood Source Localization in an Uncertian Shallow-Water Waveguide; J.Acous.Soc.Am. vol. 191, No. 1, pp. 241-249, Jan. 1997.
Yang et al.; Modeling the Enviromental Influance on the Vertical Directionality of Ambient Noise in Shallow Water; J.Acous.Soc.Am. vol. 101.No. 5, pp. 2541-2554, May 1997.
Byrne et al.; A Stable Data-Adaptive Method for Hatched Field Array Processing in Acoustic Waveguides; J.Acous.Soc.Am, vol. 87, No. 6, pp. 2493-2502. Jun. 1990.
Yang et al.; Modeling the Enviromental Influance on Noise Vertical Directionality in Shallow Water; J.Acous.Soc.Am. vol. 101, pp. 2541-2554, 1997.
Porter, M.B.; The Kraken Normal Mode Program; NRL Rpt. No. NRL/MR/5120-92-6920; May 22, 1992.
Ozard et al.; Improving Performance for Hatched-Field Processing with a Minimum Varience Beam Former; J.Acous.Soc.Am, vol. 91, No. 1, pp. 141-150, Jan. 1992.
Yang Tsih C.
Yoo Kwang B.
Edelberg Barry A.
Lobo Ian J.
Stockstill Charles J.
The United States of America as represented by the Secretary of
LandOfFree
Advanced vertical array beamformer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Advanced vertical array beamformer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Advanced vertical array beamformer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2386885