An obstacle advisory system for a vehicle and a method for operating the same are provided. The system, for example, may include, but is not limited to a display, and a processor communicatively coupled to the display, the processor configured to receive sensor data from at least one sensor configured to sense obstacles around a vehicle, generate obstacle display data based upon the sensor data, the obstacle display data comprising display data for each of a plurality of sectors and for each of a plurality of blocks within each of the plurality of sectors forming a grid surrounding the vehicle, and display the generated obstacle display data on the display.

Various implementations described herein are directed to a device having a housing configured for mounting to a watercraft. The device may include a power interface configured to receive power from a power source. The device may include a network interface configured to receive marine data from a plurality of different data sources. The device may include a sonar interface configured to receive sonar data from a sonar device. The device may include a display interface coupled to the power interface, the network interface, and the sonar interface. The display interface may be configured to receive power from the power interface, receive marine data from the network interface, receive sonar data from the sonar interface, and provide power, marine data, and sonar data to a remote marine display that is separate from the device.

Techniques are disclosed for systems and methods to provide transmission signal shaping for transmission signal-based sensor systems, such as radar and/or sonar sensor systems. A low noise signal shaping transmitter includes a digital to analog converter configured to convert a digital shaping control signal to an analog shaping control signal, a signal shaping circuit configured to convert the analog shaping control signal into a shaped voltage, and a power amplifier configured to provide a shaped transmission signal based on the shaped voltage and a digital transmission control signal. Each element of the transmitter may be formed from relatively slow switching analog and/or digital circuitry components. Resulting shaped transmission signals may be used to excite radar antennas, sonar transducers, sound cells, and/or other elements of sensor systems.

Various implementations described herein are directed to generating a map using radar data. In one implementation, a non-transitory computer-readable medium may have stored thereon a plurality of computer-executable instructions which, when executed by a computer, cause the computer to receive radar data for a marine environment proximate to a vessel, where the radar data are received from a radar sensor disposed on or proximate to the vessel. The computer-executable instructions may further be configured to cause the computer to generate a map of one or more substantially stationary objects in the marine environment based on the radar data.

A wireless sonar receiver is provided including a wireless receiver configured to receive sonar data from a wireless sonar transducer configured to receive sonar returns from an underwater environment as first sonar return data, convert the first sonar return data into sonar image data, and transmit the sonar image data wirelessly to the wireless sonar receiver. The wireless sonar receiver also includes a receiver processor and a receiver memory including computer program code configured to, with the receiver processor, cause the wireless sonar receiver to convert the sonar image data to second sonar return data corresponding to the sonar returns received by the wireless sonar transducer. The wireless sonar transducer also includes an output port configured to transmit the second sonar return data to a marine electronic device for processing of the second sonar return data to generate at least one sonar image for display on a user interface.

Various implementations described herein are directed to a device configured to use motion sensing for controlling a display. The device may include a motion sensing module configured to track orientation of a user on a watercraft and determine a direction of a cast executed by the user based on the tracked orientation of the user. The device may include a display module configured to display one or more sonar images based on the determined direction of the cast executed by the user.

Various implementations described herein are directed to a device having a display and a computer configured to receive data from one or more sensors. The data may include positional data and thermocline data. The computer may be configured to display a first image associated with a chart map of a body of water that identifies areas having a thermocline layer based on the positional data and the thermocline data.

Various implementations described herein are directed to a non-transitory computer-readable medium having stored thereon a plurality of computer-executable instructions which, when executed by a computer, cause the computer to perform various actions. The actions may include receiving sonar data from a sonar transducer, identifying a subset of the received sonar data to be displayed on the screen, and identifying a deepest level from the subset. The actions may further include determining a depth range that includes the deepest level, and rendering an image of the subset based on the depth range.

Sonar steering systems offering improved functionality and ease of use for an operator (e.g., an angler) are provided. A sonar steering system is configured to automatically adjust the directional coverage volume of the sonar system in a hands-free manner to allow the operator to focus on other tasks. Some such sonar steering systems are configured to adjust the directional coverage volume of the sonar transducers to maintain a target such as an area of interest (AOI) within the sonar display despite movement of the watercraft relative to the target. Accordingly, the coverage volume may be automatically adjusted to maintain the aim of the sonar transducers at a target that is moving through the water, such as a school of fish.

Sonar devices for detecting underwater objects are provided whereby a set of angled ultrasound transducers are employed to sense ultrasound signals from a plurality of different spatial regions. The angled ultrasound transducers may include a first pair of side-viewing ultrasound transducers and a second pair of ultrasound transducers configured for interrogating forward and reverse directions. The ultrasound signals from the set of angled ultrasound transducers may be processed to identify the presence of underwater objects in each spatial region, and the resulting identified underwater objects may be displayed, on a per-region basis, on a user interface. The ultrasound signals may additionally or alternatively be processed to generate a topographical model of the bed surface, and to generate a topographical surface image based on the three-dimensional topographical model. The topographical surface image may be displayed as a fly-over animation.