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Acoustic doppler system and method

a doppler and doppler technology, applied in the field of underwater acoustic systems, can solve the problems of limiting the utility of an otherwise useful survey and navigation aid technology, multiple sources of error in the measurement of doppler velocity,

Active Publication Date: 2017-11-02
R3VOX LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a multifan survey system and method that can be used for various surveying tasks such as bathymetry, water column monitoring, and motion stabilization. The system includes a transmitter for transmitting a message to multiple fans, and the fans use one or more beams to sense the reflected or scattered returns. The processed signals are processed to calculate maximum velocity estimates for each beam. By simultaneously considering multiple velocity estimates, the system can estimate the source velocity.

Problems solved by technology

Such Doppler velocity measurements are subject to multiple sources of error.
Such errors limit the utility of an otherwise useful survey and navigation aid technology.

Method used

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  • Acoustic doppler system and method

Examples

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Embodiment Construction

[0019]The disclosure provided in the following pages describes examples of some embodiments of the invention. The designs, figures, and description are non-limiting examples of the embodiments they disclose. For example, other embodiments of the disclosed device and / or method may or may not include the features described herein. Moreover, described features, advantages or benefits may apply to only certain embodiments of the invention and should not be used to limit the disclosed invention.

[0020]As used herein, the term “coupled” includes direct and indirect connections. Moreover, where first and second devices are coupled, intervening devices including active devices may be located therebetween.

[0021]Multibeam Echo Sounder

[0022]FIGS. 1A-E show a survey system including a multibeam echo sounder system and describe exemplary multibeam echo sounder embodiments. FIG. 1G shows a legend 100G of selected symbols appearing on FIGS. 1C-F.

[0023]FIG. 1A shows a survey system in accordance wit...

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Abstract

A survey system including a multibeam echo sounder having a projector array and a hydrophone array in a Mills Cross arrangement uses a multicomponent message to ensonify one or more fans to estimate a Doppler velocity.

Description

PRIORITY APPLICATION AND INCORPORATION BY REFERENCE[0001]This application is a continuation-in-part of U.S. patent application Ser. No. 15 / 476,137 filed Mar. 31, 2017 which claims the benefit of U.S. Prov. Pat. App. No. 62 / 329,631 filed Apr. 29, 2016 and this application claims the benefit of 62 / 423,055 filed Nov. 16, 2016 all of which are included herein by reference, in their entirety and for all purposes. This application incorporates by reference, in their entireties and for all purposes, the disclosures of U.S. Pat. No. 3,144,631 concerning Mills Cross sonar, U.S. Pat. No. 5,483,499 concerning Doppler frequency estimation, U.S. Pat. No. 7,092,440 concerning spread spectrum communications techniques, U.S. Pat. No. 8,305,841 concerning sonar used for mapping seafloor topography, and U.S. Pat. No. 9,244,168 concerning frequency burst sonar.BACKGROUND OF THE INVENTIONField of the Invention[0002]The present invention relates to underwater acoustical systems, methods for using underw...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01S15/58G01S15/60G01S7/282
CPCG01S15/582G01S7/282G01S15/60
Inventor STEENSTRUP, JENSTIEMANN, CHRISTOPHERCHUN, MARKHOBART, KIRK
Owner R3VOX LTD
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