A Continuous Transmission Frequency Modulated (CTFM) detection apparatus includes a projector, a sensor, and a hardware processor. The projector is configured to transmit underwater a frequency modulated transmission wave based on a transmission signal. The sensor is configured to form a reception beam directed downward and laterally outward to a side of the boat or the ship and receive a reflected wave, the reflected wave comprising a reflection of the transmission wave on a target object. The hardware processor is programmed to at least generate a beat signal based at least in part on the transmission signal and the reflected wave, extract a processing signal from the beat signal, and generate an image information related to the target object based on the extracted processing signal.

An ultrasonic measuring apparatus includes an ultrasonic transducer device having a substrate and an ultrasonic transducer element array that has a first channel group and a second channel group that are arranged on the substrate, a first integrated circuit apparatus that is mounted on the substrate, at one edge portion of the ultrasonic transducer element array in a first direction, such that a long-side direction coincides with a second direction that intersects the first direction, and performs at least one of signal transmission to the first channel group and signal reception from the first channel group, and a second integrated circuit apparatus that is mounted on the substrate, at the other edge portion of the ultrasonic transducer element array in the first direction, such that the long-side direction coincides with the second direction, and performs at least one of signal transmission to the second channel group and signal reception from the second channel group. In the ultrasonic transducer element array, the first group of channels and the second group of channels are arranged alternately every channel in the second direction.

An obstacle detection apparatus for vehicles includes: a first ultrasonic sensor for detecting a distance to an obstacle; a second ultrasonic sensor at a position of the vehicle for receiving a reflection wave from the obstacle of an ultrasonic wave from the first ultrasonic wave; a notifier that gives a notification of detecting the obstacle present within a preset distance in one or more of predetermined notification areas including a first notification area for the first ultrasonic sensor, and a second notification area for the second ultrasonic sensor detects the obstacle for the vehicle; and a controller that controls contents to be notified by the notifier. Furthermore, the controller determines whether a first indirect wave distance and a second indirect wave distance are used to determine whether to give the notification of detecting the obstacle in the first notification area.

Disclosed is an ultrasonic IRIS inspection system and a method of providing automatically compensated concentric B-scans by means of curve-fitting the unadjusted tube boundaries from inspection data, and from the curve fitted theoretical circle, using non-linear regression analysis to determine an adjusted center. The off-center distance between the adjust center and the misaligned center is then used to produce concentric inspection result by compensating the unadjusted inspection result with the off-center distance.

An obstacle detection apparatus for vehicles includes: a first probe wave sensor detecting a direct wave distance as a distance to an obstacle by transmitting a probe wave and receiving a reflection wave of the probe wave reflected by the obstacle; a second probe wave sensor receiving the reflection wave to detect an indirect wave distance as a distance to the obstacle by receiving the reflection wave; an approach determinator determining whether the obstacle is present between the first probe wave sensor and the second probe wave sensor and whether the obstacle is approaching the vehicle; and a distance determinator determining an obstacle distance to be less than or equal to a predetermined distance range when the indirect wave distance falls out of the distance range as the obstacle is present between the first probe wave sensor and the second probe wave sensor and the obstacle is approaching the vehicle.

Provided are a sonar system and transducer assembly for producing a 3D image of an underwater environment. The sonar system may include a housing mountable to a watercraft having a transmit transducer that may transmit sonar pulses into the water. The system may include at least one sidescan transducer array in the housing that receives first and second sonar returns with first and second transducer elements and converts the first and second returns into first and second sonar return data. A sonar signal processor may then generate a 3D mesh data using the first and second sonar return data and at least a predetermined distance between the transducer elements. An associated method of using the sonar system is also provided.

Provided are a sonar system and transducer assembly for producing a 3D image of an underwater environment. The sonar system may include a housing mountable to a watercraft having a transmit transducer that may transmit sonar pulses into the water. The system may include at least one sidescan transducer array in the housing that receives first and second sonar returns with first and second transducer elements and converts the first and second returns into first and second sonar return data. A sonar signal processor may then generate a 3D mesh data using the first and second sonar return data and at least a predetermined distance between the transducer elements. An associated method of using the sonar system is also provided.

Systems and methods for providing a sonar beam footprint are detailed herein. A system for presenting marine data includes at least one sonar transducer associated with a watercraft, a display, processor(s), and memory including computer program code. The sonar transducer emits sonar beams into an underwater environment that define a beam shape. The program code, when executed, causes, on the display, presentation of a chart and a representation of the watercraft; determines a depth corresponding to a bottom surface of a body of water at a current location of the watercraft; and determines, based on the depth and the beam shape, a sonar beam footprint corresponding to a projection of the beam shape at the depth. The program code further causes, on the display, presentation of the sonar beam footprint on the chart so as to visually indicate sonar beam coverage.

An integrated fish detection module/navigation module system that may provide the location of fish over a distance or time is provided herein. The location of fish can be presented on a navigation module display to provide information regarding the location of fish relative to navigational data known to the navigation module. The information may create a record of fish location over time and distance. In some configurations, the navigational data and fish detection module data of more than one watercraft may be combined and distributed. In some configurations, a marker may be automatically placed on a navigation module to indicate that fish have been detected at the location on the navigation module.

An integrated fish detection module/navigation module system that may provide the location of fish over a distance or time is provided herein. The location of fish can be presented on a navigation module display to provide information regarding the location of fish relative to navigational data known to the navigation module. The information may create a record of fish location over time and distance. In some configurations, the navigational data and fish detection module data of more than one watercraft may be combined and distributed. In some configurations, a marker may be automatically placed on a navigation module to indicate that fish have been detected at the location on the navigation module.