USOO7710825B2

(12) United States Patent

(10) Patent N0.:

Betts et al.

US 7,710,825 B2

(45) Date of Patent:

(54)

SIDE SCAN SONAR IMAGING SYSTEM WITH BOAT POSITION ON DISPLAY

3,296,579 A 3,359,537 A

(75)

Inventors: David A. Betts, Eufaula, AL (US);

3381264 A

May 4, 2010

1/1967 Farr et a1. 12/1967 Gen et al‘

4/1968 Lavergne et al'

Robert W. Derrow, Eufaula, AL (U S); David J. Howells, Atlanta, GA (U S)

(73) Assignee: Johnson Outdoors Inc., Racine, WI

(continued)

(Us) (*)

Notice:

FOREIGN PATENT DOCUMENTS

Subject to any disclaimer, the term of this patent is extended or adjusted under 35

GB

1316138

5 /1973

U.S.C. 154(b) by 0 days. (21) App1.No.: 12/319,594 (22)

Filed:

OTHER PUBLICATIONS

Jan“ 9’ 2009

(65)

USACE, “Chapter 11, Acoustic Multibeam Survey Systems for

Prior Publication Data

Us 2009/0122647 A1

Deep-Draft Nav1gat10n ProJects , Apr. 1, 2004, 44 pages.

May 14, 2009

Related US. Application Data

(Continued) Primary Examinerilan J LObO _

(74) Attorney, Agent, or FirmiKmney & Lange, FA. (63)

Continuation of application No. 11/195,107, ?led on Aug. 2, 2005, now Pat. No. 7,652,952.

(57)

ABSTRACT

(60) Provisional application No. 60/598,326, ?led on Aug. 2, 2004. A system for use With a boat to provide underwater sonar images includes a left side scan sonar transducer for trans

(51)

IIlt- Cl-

(2006-01)

mitting left side scan sonar pulses and for receiving left side

(52) (58)

GOIS 7/52 (200601) U..S. Cl. ...... ...... ....... .. 367/107; 367/88; 367/111 Field of Class1?catlon Search ................. .. 367/88,

scan sonar return signals and a right side scan sonar trans ducer for transmitting right Side scan sonar pulses and for receiving right Side scan sonar return Signals_ The System

(56)

_ _ 387/107’ 1 11 see apphcanon ?le for complete searCh hlstory' References Cited

further includes signal processing circuitry for processing the left and right side scan sonar return signals to produce side scan image data and a digital processor for providing signals

Gols 15/89

to a display based upon the side scan image data to produce a 1,823,329 2,416,338 3,005,973 3,090,030 3,142,032 3,144,631

U.S. PATENT DOCUMENTS

display image on the display showing boat location, a water

A A A A A A

column between the boat and bottom, and an underwater image comprising at least one of a left side underwater image and a right side underwater image.

9/1931 2/1947 10/1961 5/1963 7/1964 8/1964

Marrison Mason KietZ Schuck Jones Lustig et al.

18 Claims, 16 Drawing Sheets

US 7,710,825 B2 Page 2 US. PATENT DOCUMENTS

3,451,038 3,458,854 3,484,737 3,553,638 3,585,578 3,585,579 3,624,596 3,716,824 3,742,436 3,757,287 3,895,339 3,895,340 3,898,608 3,949,348 3,950,723 3,953,828 3,964,424 3,967,234 4,030,096 4,047,148 4,052,693 4,063,212 4,075,599 4,184,210 4,197,591 4,198,702 4,199,746 4,200,922 4,204,281 4,207,620 4,216,537 4,232,380 4,247,923 4,262,344 4,287,578 4,422,166 4,493,064 4,635,240 4,641,290 4,642,801 4,796,238 4,802,148 4,815,045 4,855,961 4,879,697 4,912,685 4,924,448 4,958,330 4,970,700 4,975,887 4,982,924 5,033,029 5,113,377 5,142,502 5,155,706 5,182,732 5,184,330 5,241,314 5,243,567 5,257,241 5,260,912 5,303,208 5,376,933

6/1969 7/1969 12/1969 1/1971 6/1971 6/1971 11/1971 2/1973 6/1973 9/1973 7/1975 7/1975 8/1975 4/1976 4/1976 4/1976 6/1976 6/1976 6/1977 9/1977 10/1977 12/1977 2/1978 1/1980 4/1980 4/1980 4/1980 4/1980 5/1980 6/1980 8/1980 11/1980 1/1981 4/1981 9/1981 12/1983 1/1985 1/1987 2/1987 2/1987 1/1989 1/1989 3/1989 8/1989 11/1989 3/1990 5/1990 9/1990 11/1990 12/1990 1/1991 7/1991 5/1992 8/1992 10/1992 1/1993 2/1993 8/1993 9/1993 10/1993 11/1993 4/1994 12/1994

Jones et al.

5,390,152 5,412,618 5,442,358 5,493,619 5,515,337 5,537,366 5,546,356 5,596,549 5,602,801 5,930,199 6,002,644 6,215,730 6,537,224

Gilmour

6,606,958 B1

Jones et al. Dorr Gilmour Cook

6,678,403 B1

Maass

Murphree Walsh Sublett

Fischer, Jr. Dorr et al. Dickenson et al. Dorr et al. Jones

Bealor, Jr.

A A A A A A A A A A A B1 B2

6,738,311 B1

2/1995 Boucher et al. 5/1995 Gilmour 8/1995 Keeler et al.

2/1996 5/1996 7/1996 8/1996 1/1997 2/1997 7/1999 12/1999 4/2001 3/2003 8/2003 1/2004

Haley et al. Gilmour et al. Gilmour Zehner Sheriff Nussbaum et al. Wilk Wilk Pinto

Mauchamp et al. Bouyoucos Wilk

5/2004 Guigne

Hagemann

6,842,401 B2 6,980,688 B2 7,236,427 B1

Jones Stevens et al.

7,355,924 B2 *

4/2008

7,405,999 B2

7/2008 Skjold-Larsen

Hagemann Gilmour Sublett Kosalos et al.

Hagemann Hagemann

1/2005 Chiang et al. 12/2005 Wilk 6/2007 Schroeder Zimmerman et al. ........ .. 367/88

OTHER PUBLICATIONS Various Imagenex Technical Specifcations and User’ s Manual, prior to Aug. 2003, 36 pages.

Andrew and Young, “Setup and Troubleshooting Procedures for

Clifford

Klein 5500 SideScan Sonar”, Nov. 2003, 160 pages.

Jones et al.

Kongsberg Maritime AS, “EA 400 Survey”, Aug. 2004, 4 pages. U.S. Appl. No. 60/552,769 File Wrapper, Mar. 12, 2004. Edo Corporation Global Technology Reach, Model 6400 Fan Beam

Hagemann Hagemann Morgera Delignieres Caron et al. De Kok Gilmour

Transducer,

http://web/archive/org/web/20040608054923/www.

edoceramic.con/NavDucers.htm, Jun. 3, 2004, pp. 1-4. Klein Digital Sonar Systems, “. . . The Next Generation From the

Heyser

World Leader in Side Scan Sonar and Sub-bottom Pro?ling Systems” 1988, pp. 3-12. Humminbird “The Product Line>Matrix Products>Matrix 3 5” http://

Klein Odero et al.

hbiProducts.asp?ID, Apr. 4, 2003, pp. 1-2.

web.archive.org/web/20030404000447/www.humminbird.com/

Geohegan, Jr. et al.

Humminbird “Matrix 97 GPS Trackplotter Operations Manual” 2003

Massa et al.

pp. 1-82.

Perny

Humminbird “Matrix 35 Fishing System”, prior to Aug. 2, 2003, 4

Bourgeois et al.

pages.

Gilmour Nakamura Jaffe et al.

pp. 36-39.

Lowrance et al.

Gilmour Gaer

Higgins Gilmour et al. Maccabee et al. Havins Jones Johnson Wilcox et al.

Hydro International “Product Survey Side-Scan Sonar” Apr. 2004, “Transducers Quad Beam”, prior to Aug. 2, 2003, 1 page. Techsonic Industries Inc. “Mask, Acoustic” Schematic, May 24, 1996, 1 page. Techsonic Industries Inc. “Element, 455kHZ” Schematic, Jun. 13, 1996, 1 page. D.M. Hussong, D.M. Hills, J.F. Campbell, and D.S. Peat, “High Resolution Acoustic Sea?oor Mapping”, 20th Annual OTC, Hous ton, Texas, May 2-5, 1988, pp. 305-310.

Nancy Baker, Patricia Fryer, and Fernando Martinez “Rifting history of the northern Mariana Trough: SeaMARC II and seismic re?ection

Haley et al.

surveys”, Journal of Geophysical Research, vol. 101, No. B5, May 10, 1996, pp. 11,427-11,455.

Pichowkin Adams et al. Keeler et al.

Patience A. Cowie, Alberto Malinverno, William B.F. Ryan, and Margo H. Edwards, “Quantitative fault studies on the East Paci?c Rise: A comparison of sonar imaging techniques” Journal of

Gingerich

Geophysical Research, vol. 99, No. B8, Aug. 10, 1994, pp. 15,205 15,218. Techsonic Industries, Inc. “Wideside”, prior to Aug. 2, 2003, 5 pages.

Henderson et al. Latham Dorr

Tupper et al.

* cited by examiner

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US 7,710,825 B2

US 7,710,825 B2 1

2

SIDE SCAN SONAR IMAGING SYSTEM WITH BOAT POSITION ON DISPLAY

craft. It would also be advantageous to provide sonar imaging system mountable to a motor (such as a trolling motor), a transom of the watercraft, or to the hull of the watercraft. It

would also be advantageous to provide sonar imaging system operable at multiple resonant frequencies for optimized per formance at varying bottom depths. It would be desirable to

CROSS-REFERENCE TO RELATED

APPLICATION(S) This is a continuation of US. patent application Ser. No. 11/195,107, entitled “SONAR IMAGING SYSTEM FOR

provide for a sonar imaging system for mounting to a water

MOUNTING TO WATERCRAFT,” ?led Aug. 2, 2005 by

features.

craft having one or more of these or other advantageous

DavidA. Betts et al. and claims the bene?t of US. Provisional BRIEF SUMMARY OF THE INVENTION

Patent Application No. 60/598,326, ?led Aug. 2, 2004, the teachings and disclosure of which are hereby incorporated in their entireties by reference thereto. Reference is also made to application Ser. No. 12/319,604

In view of the above, it is an objective of the present invention to provide a new and improved sonar imaging sys tem that is capable of being connected to a watercraft, such as a ?shing boat. It is a further objective to provide a new and

entitled “SIDE SCAN SONAR IMAGING SYSTEM WITH

ASSOCIATED GPS DATA” and application Ser. No. 12/319, 586 entitled “SIDE SCAN SONAR IMAGING SYSTEM

improved sonar imaging system that provides imaging of the

WITH IMAGE ENHANCEMENT”, which are ?led on even

underwater environment to the sides of the watercraft. It is a still further object of the invention to provide a new and

date and are assigned to the same assignee as this application. 20

improved sonar imaging system that additionally provides

FIELD OF THE INVENTION

imaging of the underwater environment below the watercraft. The system of the present invention realizes several advan

The present invention relates generally to sonar imaging systems for use in sport ?shing applications such as in a ?sh ?nder, sonar depth sounder, etc., and more particularly to side scan sonar imaging systems for imaging of the underwater environment to the sides of the watercraft rather than just below the watercraft.

25

tages over the traditional tow?sh side scan sonar systems. It is more convenient because there are no deployment require ments of getting the transducer tow?sh into the water, no

BACKGROUND OF THE INVENTION

30

cable handling hassles and tangles, no precise speed control requirements to keep the tow?sh at the right depth and prevent it from hitting the bottom, no complicated large diameter turn requirements to prevent the tow?sh from hitting the bottom when you want to turn the boat, and no worries about getting

the lines and cable tangled when ?shing. The system of the Sonar devices that transmit sound waves have been used

present invention can even be used for imaging by a water

previously to obtain information about underwater articles, including ?sh, structures and obstructions, and the bottom. The sound waves travel from a transducer mounted to a bot

craft in reverse.

The system of the present invention is also more secure 35

chance of snagging the tow?sh or loss of transducer. Most

tom surface of the vessel through the water. The sound wave transmits from the sonar devices in diverging patterns. The

?shing is done near bottom rises, drop-offs and underwater structures. Most natural and especially man-made lakes have

sound waves contact underwater articles, which create return

echoes. The transducer receives the return echoes and the sonar device analyzes the received echoes. A display device

40

displays representations of the received echoes, for locating

rocks, stumps and standing timber that can snag a tow?sh and cause damage or loss of the equipment.

Additionally, the system of the present invention provides

?sh and other underwater articles.

more area of coverage. The watercraft mounted transducer of

the present invention does not limit the turning radius of the vessel, and it provides the ability to image closer to the shore

Known side scan sonar devices locate the transducer in a

vessel towed by the watercraft (e.g., a “tow ?sh”). The tow ?sh is coupled to the sonar display by a long cable. The length of the cable will depend on the depth of the water and other

and near structure. This allows for faster and more complete

conditions. For typical applications, the length of the cable is 50 feet or more. Moreover, it is not uncommon for the cable to be hundreds or even thousands of feet long. As can be

appreciated by some having ordinary skill in the art, a ?sher

than the traditional side scan sonar systems. There is no

50

man or recreation user desiring to have side scan images

imaging. The system also provides more accurate target loca tions. Having the transducer mounted to the watercraft allows for precise target locations. With a towed side scan system the crew has to take into account how much cable is deployed and how deep the tow?sh is to determine how far back behind the boat the target is. With the watercraft mounted system of the

would be hindered by such an arrangement. For example, maneuvering or turning of the watercraft in different direc

present invention, this is not a factor. To provide even more

tions is dif?cult, as well as tangling of the sonar cable with

the offset necessary to account for the X and Y distance

accurate images, the system of the present invention provides

transducers are maintained at a consistent distance from the

between the side imaging transducer and the GPS antenna. The system of the present invention also has a better aspect at

bottom of the body of water. This distance is intended to provide desired or optimized resolution and ?eld of view. A

some targets because, in some cases, the view from the sur face can “see” better over rises and into holes than the towed

?shing or other recreational equipment. Such known tow ?sh

consistent distance inhibits, if not prohibits, modifying known transducers for side scan applications (or mounting

55

side scan sonar at a ?xed distance from the bottom. The 60

known side scan transducers to watercraft) because the dis tance between the transducer to the bottom of the water will vary as the watercraft travels due to the varying depth of the

In a preferred embodiment of the present invention, the

water.

Accordingly, it would be advantageous to provide a sonar

imaging system that is coupled to the watercraft, rather than being coupled by a ?exible cable and towed behind the water

system of the present invention can also be mounted to smaller watercraft such as canoes, kayaks and other personal watercraft.

65

system includes features to correct for watercraft mounted nature of the transducers. Unlike using a tow?sh in which data collection takes place at a ?xed distance from the bottom

(same aspect angle at any depth of water), and in which the

US 7,710,825 B2 3

4

tow?sh dynamics are decoupled from vessel motion in rough seas, the system of the present invention compensates for

Preferably, the system includes at least one side scanning element and at least one bottom scanning element and an

electronic control head unit coupled to the transducer that is con?gured to display sonar images. In one embodiment of the

these differences. In a preferred embodiment of the present

invention, the depression angle of the side imaging elements is increased from about 20 degrees to about 30 degrees. This provides better coverage at the greater aspects. Also in a preferred embodiment, the side elements are designed to be

present invention, the sonar imaging system includes circular downward acoustic elements and rectangular acoustic ele ments. The present invention further relates to a software

dual frequency to provide a trade-off between area of cover

?lter con?gured to remove noise generated by a spark plug or

age and resolution. Transducer element shielding and soft

other operation of a motor for the watercraft.

Other aspects, objectives and advantages of the invention

ware ?lters are also provided in a preferred embodiment to

will become more apparent from the following detailed

eliminate vessel noise sources such as spark plug and electri

cal system EMI (solenoids, VHF radios, electric motors, etc.).

description when taken in conjunction with the accompany

In one embodiment of the present invention, the system

ing drawings.

includes passive yaw, tilt transducer minimization or com

BRIEF DESCRIPTION OF THE DRAWINGS

pensation using ?oating oil bath self leveling. In another embodiment the system includes active yaw, tilt transducer

The accompanying drawings incorporated in and forming

minimization or compensation via tilt sensors and motors.

Additional features over traditional side scan provided by embodiments of the present invention include ?sh identi?ca tion and alarm in side beams. Typical side scan systems consider ?sh as unwanted noise. Screen capture and playback functioning like a digital camera with the ability to store an

a part of the speci?cation illustrate several aspects of the present invention and, together with the description, serve to 20

FIG. 1 is an isometric illustration of one embodiment of a

?shing vessel mounted sonar imaging system of the present

invention;

image, review already stored images, erase unwanted images,

FIG. 2 is an exploded bottom view isometric illustration of

and download images to a computer are also provided in

embodiments of the present invention. Unlike typical data

25

FIG. 3 is a side view illustration of the assembled trans

simply push a capture button, instead of having to start

ducer module of FIG. 2; FIG. 4 is an end section view of the assembled transducer 30

particular area either using the cursor or a touch screen.

Further, the ability to use standard image enhancement soft ware (algorithms) either in the unit or post processed is pro

vided to allow for color, contrast, brightness, auto ?x, edge detect, etc.

an embodiment of a transducer module constructed in accor

dance with the teachings of the present invention;

recording when a user sees an image on the screen they can

recording before the user sees the target. Preferred embodi ments also provide zoom capability that allows a user to view only the right or left side at a time and also zoom into a

explain the principles of the invention. In the drawings:

35

module of FIG. 3 taken about section line 4-4; FIG. 5 is a partial section view of the housing joint of the assembled transducer module of FIG. 4 taken at section A; FIG. 6 is a fully exploded bottom view isometric illustra tion to the transducer module of FIG. 2; FIG. 7 is a partial exploded view isometric illustration of a

top housing assembly showing placement of downward look

In a preferred embodiment of the present invention, a down

beam is provided along with the side imaging. This provides

ing sonar elements;

for more complete aron the boat information (both sides and straight down). It is not limited to a single beam. One

top housing assembly showing placement of downward look

FIG. 8 is a partial exploded view isometric illustration of a

preferred embodiments, at least one view shows both down

ing sonar elements and side scan sonar elements; FIG. 9 is an exploded isometric illustration of an embodi ment of a downward looking sonar element suitable for appli

beam and side imaging. This provides the ability to better

cation in the sonar imaging system of the present invention;

embodiment utilizes a 200 kHz/50 kHz dual beam. Other

40

embodiments may use a quad beam or even six beam. In

relate length of shadow information to the size of the under water target. It also provides for a quick means for veri?cation of target location. After a target is located off to a side, the boat can be driven directly over the target and located in the down

45

the sonar imaging system of the present invention; FIG. 11 is an isometric illustration of one embodiment of a

cable attachment for the sonar imaging system of the present

beam for precise location. In a still further preferred embodiment, GPS imaging is also provided with the side imaging. In such embodiments a

invention; and 50

cursor mode allows a user to move the cursor over a target of

interest on the screen image and set a waypoint for the loca tion of the structure. The GPS history may be used to deter mine the distance back and the sonar may be used to deter mine the distance to the side. The GPS speed can be used to

FIG. 10 is an exploded isometric illustration of an embodi ment of a side scan sonar element suitable for application in

FIG. 12 is a simpli?ed system block diagram of an embodi ment of the sonar imaging system of the present invention. FIGS. 13-18 show examples of sonar images as they appear on a display screen.

55

FIG. 19 shows a display screen showing an underwater environment using sonar images from both side scan ele ments and sonar returns from a downward sonar element.

provide the screen scroll rate to provide more accurate front to back target dimensions. Without GPS or a speed sensor a fast

scroll rate and a slow boat speed will elongate targets and a slow scroll rate and a fast boat speed will shorten targets. The corners of screen captures can be marked so that large area 60

composite mosaic images can be generated in the unit or post processed later. Preferably, one view that shows both side

While the invention will be described in connection with certain preferred embodiments, there is no intent to limit it to those embodiments. On the contrary, the intent is to cover all alternatives, modi?cations and equivalents as included within the spirit and scope of the invention as de?ned by the

appended claims.

imaging and navigation information is provided. This makes it easier to follow tracks and provide ef?cient area coverage. In accordance with these objectives, an embodiment of the present invention provides a sonar imaging system for a watercraft including a transducer coupled to the watercraft.

DETAILED DESCRIPTION OF THE INVENTION 65

Turning now to the drawings, FIG. 1 illustrates a vessel (shown as a watercraft 10) on a surface 12 of a body of water

Side scan sonar imaging system with boat position on display

May 4, 2010 - (58) Field of Class1?catlon Search ................. .. 367/88, ..... Known side scan sonar devices locate the transducer in a vessel towed by the ...

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