Side scan sonar imaging system with boat position on display
DC CAFCFirst Claim
1. A system mounted to a boat to provide underwater sonar images, the system comprising:
- a left side scan sonar transducer for transmitting left side scan sonar pulses directed downward and laterally outward to a left side of the boat, the left side scan sonar pulses forming a beam having a narrow horizontal width in a direction of travel of the boat and a wide vertical width in a plane perpendicular to the direction of boat travel, and for receiving left side scan sonar return signals;
a right side scan sonar transducer for transmitting right side scan sonar pulses directed downwardly and laterally outward to a right side of the boat, the right side scan sonar pulses forming a beam having a narrow horizontal width in the direction of travel of the boat and a wide vertical width in the plane perpendicular to the direction of boat travel, and for receiving right side scan sonar return signals;
signal processing circuitry for processing the left and right side scan sonar return signals to produce side scan image data;
a display; and
a digital processor for providing signals to the display based upon the side scan image data to produce a display image on the display showing a grey-scale or color underwater image that provides details of underwater articles and bottom and contains shadowing comprising a) at least one of a left side underwater image and a right side underwater image, b) a boat location relative to the underwater image, and c) an indication of distance from the boat, wherein the indication is associated with the underwater image.
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Abstract
A system for use with a boat to provide underwater sonar images includes a left side scan sonar transducer for transmitting left side scan sonar pulses and for receiving left side scan sonar return signals and a right side scan sonar transducer for transmitting right side scan sonar pulses and for receiving right side scan sonar return signals. The system 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 to a display based upon the side scan image data to produce a display image on the display showing boat location, a water 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.
159 Citations
18 Claims
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1. A system mounted to a boat to provide underwater sonar images, the system comprising:
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a left side scan sonar transducer for transmitting left side scan sonar pulses directed downward and laterally outward to a left side of the boat, the left side scan sonar pulses forming a beam having a narrow horizontal width in a direction of travel of the boat and a wide vertical width in a plane perpendicular to the direction of boat travel, and for receiving left side scan sonar return signals; a right side scan sonar transducer for transmitting right side scan sonar pulses directed downwardly and laterally outward to a right side of the boat, the right side scan sonar pulses forming a beam having a narrow horizontal width in the direction of travel of the boat and a wide vertical width in the plane perpendicular to the direction of boat travel, and for receiving right side scan sonar return signals; signal processing circuitry for processing the left and right side scan sonar return signals to produce side scan image data; a display; and a digital processor for providing signals to the display based upon the side scan image data to produce a display image on the display showing a grey-scale or color underwater image that provides details of underwater articles and bottom and contains shadowing comprising a) at least one of a left side underwater image and a right side underwater image, b) a boat location relative to the underwater image, and c) an indication of distance from the boat, wherein the indication is associated with the underwater image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for providing navigational information, water depth information, and underwater sonar images, the system comprising:
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a GPS receiver for providing GPS position data; a sonar transducer assembly mounted to a boat, the sonar transducer assembly including a left side scan sonar transducer, a right side scan sonar transducer, and a down beam sonar transducer; signal processing circuitry for processing sonar return signals from the left side scan sonar transducer, the right side scan sonar transducer, and the down beam sonar transducer; a user interface including user inputs and a display; and a digital processor for controlling the display based upon the processed sonar return signals and the GPS position data to display information in a plurality of modes selectable with the user inputs, wherein the plurality of modes include; a mode in which the digital processor causes the display to display a grey-scale or color underwater image that provides details of underwater articles and bottom and contains shadowing based upon sonar return signals received by one of the left and right side scan sonar transducers; a mode in which the digital processor causes the display to simultaneously show a grey-scale or color underwater image that provides details of underwater articles and bottom and contains shadowing based upon sonar return signals received by both of the left side scan sonar transducer and the right side scan sonar transducer; a mode in which the digital processor causes the display to show information based upon the GPS position data; and a mode in which the digital processor causes the display to simultaneously show a grey-scale or color underwater image that provides details of underwater articles and bottom and contains shadowing based upon sonar return signals received by one or both of the left side scan transducer and the right side scan transducer, and information based upon GPS position data; wherein the digital processor causes the display to show an indication of distance from the boat, wherein the indication is associated with the grey-scale or color underwater image. - View Dependent Claims (14, 15)
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16. A method of providing underwater sonar images, the method comprising:
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transmitting left and right side scan sonar pulses with left and right side scan sonar transducers, respectively; receiving left and right side scan sonar return signals with the left and right side scan sonar transducers, respectively; generating side scan image data from the left and right side scan sonar return signals; displaying a grey-scale or color underwater image that provides details of underwater articles and bottom and contains shadowing based upon the side scan image data; and displaying a scale associated with the grey-scale or color underwater image indicating lateral distance from a boat, wherein the left and right side scan sonar transducers are mounted to the boat, and wherein the left side scan sonar pulses are directed downward and laterally outward to a left side of the boat, the left side scan sonar pulses having a narrow horizontal width in a direction of travel of the boat and a wide vertical width in a plane perpendicular to the direction of boat travel, and wherein the right side scan sonar pulses are directed downward and laterally outward to a right side of the boat, the right side scan sonar pulses having a narrow horizontal width in the direction of travel of the boat and a wide vertical width in the plane perpendicular to the direction of boat travel. - View Dependent Claims (17, 18)
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Specification