Communications – electrical: acoustic wave systems and devices – Echo systems – Side scanning or contour mapping sonar systems
Reexamination Certificate
2005-03-15
2005-03-15
Pihulic, Daniel (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Echo systems
Side scanning or contour mapping sonar systems
Reexamination Certificate
active
06868041
ABSTRACT:
The composition of the seabed can be estimated by measuring the amplitude of echoes back-scattered from the seabed. However, the amplitude measured varies not only with the type of material present on the seabed but also with the range travelled to and the angle of incidence of the transmitted pulse at the seabed. This invention is a method for adjusting the amplitudes of backscattered echoes to compensate for the attenuation due to range and angle of incidence. A compensation table is created, each cell of which is associated with a unique combination of a partition of range and a partition of angle of incidence values. Each cell contains summary data for all echo amplitudes associated with that cell. The echo amplitude values are then adjusted using the summary data held in the compensation table.
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Quester Tangent, QTC Sideview (TM), 2004, 2 Pages.*
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Christney Anthony C.
Preston Jonathan M.
Brinks Hofer Gilson & Lione
Pihulic Daniel
Quester Tangent Corporation
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