Volumetric and terrain imaging sonar

Details Volumetric and terrain imaging sonar Volumetric and terrain imaging sonar

G - Physics

01

S

G01S 15/89 (2006.01) G01S 7/52 (2006.01) G01S 15/87 (2006.01)

Patent

CA 2069552

ABSTRACT OF THE DISCLOSURE A method and apparatus for the generation of a three-dimensional image representing structures detected within a volume. Two dimensional differential phase measurements are made on backscatter signals. Azimuth, elevation and range are calculated over a statistically large number of spatially diverse backscatter returns and used to construct a histogram of backscatter data. The histogram of backscatter data can be processed with standard image processing techniques to produce terrain maps or volumetric models of the volume of water. A system constructed according to the methods of this invention is capable of producing a three-dimensional map of the volume insonified without mechanical array scanning or electronic beam scanning. A combination of two or more volumetric scanning systems can be used to increase the resolution achievable in modelling the volumetric area.

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