Brandon J Strong

US Patent:

6700834, Mar 2, 2004

Filed:

Jul 23, 2001

Appl. No.:

09/911896

Inventors:

Blair H. Brumley - La Jolla CA
Eugene A. Terray - Falmouth MA
Brandon S. Strong - San Diego CA

Assignee:

RD Instruments, Inc. - San Diego CA

International Classification:

G01S 1558

US Classification:

367 90

Abstract:

A system and method for measuring the directional spectrum of one or more waves in a fluid medium using a multi-beam sonar system. In an exemplary embodiment, range cells located within a plurality of acoustic beams are sampled to provide current velocity data. Optionally, wave surface height and pressure data is obtained as well. This velocity, wave height, and pressure data is Fourier-transformed by one or more signal processors within the system, and a surface height spectrum produced. A cross-spectral coefficient matrix at each observed frequency is also generated from this data. A sensitivity vector specifically related to the ADCPs transducer array geometry is used in conjunction with maximum likelihood method (MLM), iterative maximum likelihood method (IMLM), or other similar methods to solve a the wave equation at each frequency and produce a frequency-specific wave directional spectrum. Ultimately, the frequency-specific spectra are combined to construct a complete two-dimensional wave directional spectrum. The system is also capable of measuring current profile as a function of depth in conjunction with wave direction and wave height.

US Patent:

7007555, Mar 7, 2006

Filed:

Aug 10, 2004

Appl. No.:

10/915114

Inventors:

Brandon S. Strong - San Diego CA, US
Blair H. Brumley - La Jolla CA, US
Jerald W. Mullison - Carlsbad CA, US

Assignee:

Teledyne RD Instruments, Inc. - San Diego CA

International Classification:

G01F 1/20

US Classification:

7386118

Abstract:

A system and method of horizontal wave measurement is disclosed. The system for measuring the directional spectrum of waves in a fluid medium having a substantially planar surface may include a sonar system having a plurality of transducers for generating respective acoustic beams and receiving echoes from one or more range cells located substantially within the beams, at least one of the plurality of acoustic beams being angled non-orthogonally to at least one other of the plurality of acoustic beams. The method may calculate the directional spectrum associated with the waves from the received echoes.

US Patent:

7379387, May 27, 2008

Filed:

Mar 6, 2006

Appl. No.:

11/369123

Inventors:

Brandon S. Strong - San Diego CA, US
Blair H. Brumley - La Jolla CA, US
Jerald W. Mullison - Carlsbad CA, US

Assignee:

Teledyne RD Instruments, Inc. - Poway CA

International Classification:

G06F 19/00
G01F 1/20
G01S 15/58

US Classification:

367 89

Abstract:

A system and method of horizontal wave measurement is disclosed. The system for measuring the directional spectrum of waves in a fluid medium having a substantially planar surface may include a sonar system having a plurality of transducers for generating respective acoustic beams and receiving echoes from one or more range cells located substantially within the beams, at least one of the plurality of acoustic beams being angled non-orthogonally to at least one other of the plurality of acoustic beams. The method may calculate the directional spectrum associated with the waves from the received echoes.

US Patent:

7545705, Jun 9, 2009

Filed:

Dec 18, 2007

Appl. No.:

11/959377

Inventors:

Blair H Brumley - La Jolla CA, US
Eugene A Terray - Falmouth MA, US
Brandon S Strong - San Diego CA, US

Assignee:

Teledyne RD Instruments, Inc. - Poway CA

International Classification:

G01S 15/58

US Classification:

367 90

Abstract:

A system and method for measuring the directional spectrum of one or more waves in a fluid medium using a multi-beam sonar system. In an exemplary embodiment, range cells located within a plurality of acoustic beams are sampled to provide current velocity data. Optionally, wave surface height and pressure data is obtained as well. This velocity, wave height, and pressure data is Fourier-transformed by one or more signal processors within the system, and a surface height spectrum produced. A cross-spectral coefficient matrix at each observed frequency is also generated from this data. A sensitivity vector specifically related to the ADCP's transducer array geometry is used in conjunction with maximum likelihood method (MLM), iterative maximum likelihood method (IMLM), or other similar methods to solve a the wave equation at each frequency and produce a frequency-specific wave directional spectrum. Ultimately, the frequency-specific spectra are combined to construct a complete two-dimensional wave directional spectrum. The system is also capable of measuring current profile as a function of depth in conjunction with wave direction and wave height.

US Patent:

7768874, Aug 3, 2010

Filed:

May 23, 2008

Appl. No.:

12/126735

Inventors:

Brandon S Strong - San Diego CA, US
Blair H Brumley - La Jolla CA, US
Jerald W Mullison - Carlsbad CA, US

Assignee:

Teledyne RD Instruments, Inc. - Poway CA

International Classification:

G01S 15/88
G01S 15/60

US Classification:

367 89

Abstract:

A system and method of horizontal wave measurement is disclosed. The system for measuring the directional spectrum of waves in a fluid medium having a substantially planar surface may include a sonar system having a plurality of transducers for generating respective acoustic beams and receiving echoes from one or more range cells located substantially within the beams, at least one of the plurality of acoustic beams being angled non-orthogonally to at least one other of the plurality of acoustic beams. The method may calculate the directional spectrum associated with the waves from the received echoes.

US Patent:

20100302908, Dec 2, 2010

Filed:

May 26, 2010

Appl. No.:

12/788155

Inventors:

Brandon S. Strong - San Diego CA, US

International Classification:

G01S 15/02
G01S 15/88

US Classification:

367 90

Abstract:

A system and a method for determining one or more wave characteristics from a moving platform are disclosed. A sonar system, such as an Acoustic Doppler Current Profiler, can profile the water motion relative to the platform, and an earth reference can determine a measure of the platform motion relative to a fixed earth reference. Both water profile and earth reference measurements can be synergistically employed to compensate for motion of the platform. Directional wave spectra and non-directional wave spectrum can be computed and translated via linear wave theory to surface height spectra and used to calculate characteristics, such as significant wave height, peak period, and peak direction.

US Patent:

62821512, Aug 28, 2001

Filed:

Feb 1, 2000

Appl. No.:

9/495743

Inventors:

Blair H. Brumley - La Jolla CA
Eugene A. Terray - Falmouth MA
Brandon S. Strong - San Diego CA

Assignee:

Rowe-Deines Instruments - San Diego CA

International Classification:

G01S 1558

US Classification:

367 90

Abstract:

A system and method for measuring the directional spectrum of one or more waves in a fluid medium using a multi-beam sonar system. In an exemplary embodiment, range cells located within a plurality of acoustic beams are sampled to provide current velocity data. Optionally, wave surface height and pressure data is obtained as well. This velocity, wave height, and pressure data is Fourier-transformed by one or more signal processors within the system, and a surface height spectrum produced. A cross-spectral coefficient matrix at each observed frequency is also generated from this data. A sensitivity vector specifically related to the ADCP's transducer array geometry is used in conjunction with maximum likelihood method (MLM), iterative maximum likelihood method (IMLM), or other similar methods to solve a the wave equation at each frequency and produce a frequency-specific wave directional spectrum. Ultimately, the frequency-specific spectra are combined to construct a complete two-dimensional wave directional spectrum. The system is also capable of measuring current profile as a function of depth in conjunction with wave direction and wave height.

US Patent:

60523344, Apr 18, 2000

Filed:

Aug 4, 1998

Appl. No.:

9/128422

Inventors:

Blair H. Brumley - La Jolla CA
Eugene A. Terray - Falmouth MA
Brandon S. Strong - San Diego CA

Assignee:

Rowe-Deines Instruments - San Diego CA

International Classification:

G01S 1558

US Classification:

367 90

Abstract:

A system and method for measuring the directional spectrum of one or more waves in a fluid medium using a multi-beam sonar system. In an exemplary embodiment, range cells located within a plurality of acoustic beams are sampled to provide current velocity data. Optionally, wave surface height and pressure data is obtained as well. This velocity, wave height, and pressure data is Fourier-transformed by one or more signal processors within the system, and a surface height spectrum produced. A cross-spectral coefficient matrix at each observed frequency is also generated from this data. A sensitivity vector specifically related to the ADCP's transducer array geometry is used in conjunction with maximum likelihood method (MLM), iterative maximum likelihood method (IMLM), or other similar methods to solve a the wave equation at each frequency and produce a frequency-specific wave directional spectrum. Ultimately, the frequency-specific spectra are combined to construct a complete two-dimensional wave directional spectrum. The system is also capable of measuring current profile as a function of depth in conjunction with wave direction and wave height.