Advanced Vertical Array Beamformer
Patent, Filed 13 Aug 1998, patented 28 Dec 1999
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
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 andor 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 tittering 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.
- Acoustic Detection and Detectors