Acoustic Vector Sensing Sonar System
Patents, Filed 27 Jan 1998, patented 27 Jul 1999
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A system for the detection of acoustic signals utilizing an array of acoustic sensors coupled to a beam former which generates a steered acoustic beam using the output from one or more of the acoustic sensors within the array. The acoustic sensors include a multiaxis vector sensor co-located with a scalar acoustic pressure sensor. The beam former generates a weighted output for each acoustic sensor by combining the weighted output of the scalar pressure sensor with the scalar field generated by forming the inner product of the vector components measured at each sensor location with a vector component weighting vector. The weighted output signals are delayed to synchronize the phase of the weighted output signal to that of a weighted signal at a reference array location. The resulting delayed weighted output signals are then summed.
- Acoustic Detection and Detectors