Castable sonar devices and operations in a marine environment

1. A castable sonar device, the castable sonar device comprising:

a housing configured to float on a body of water above an underwater environment, wherein the housing comprises a tether connection feature configured to connect to a tether or fishing line;

a power source positioned within the housing;

a transducer assembly positioned within the housing, wherein the transducer assembly comprises:

a transducer array positioned within the housing and aimed downwardly therefrom, wherein the transducer array comprises a phased array, wherein the phased array comprises a plurality of transducer elements, wherein each of the plurality of transducer elements is configured to receive phased array sonar returns from the underwater environment;

a wireless communication element configured to transmit one or more signals to and receive one or more signals from a remote computing device; and

processing circuitry provided within the housing, wherein the processing circuitry is configured to:

receive one or more phased array sonar returns from the transducer array;

process the one or more phased array sonar returns to generate phased array sonar return data corresponding to the underwater environment, wherein generating phased array sonar return data comprises determining an angle, with respect to a water line of the body of water, of a sonar return associated with an object in the underwater environment based on relative positions and known distances between two or more of the plurality of transducer elements of the phased array, wherein the two or more of the plurality of transducer elements each receive a sonar return associated with the object;

generate, based on the phased array sonar return data, a sonar image corresponding to the underwater environment; and

transmit, via the wireless communication element, the sonar image to the remote computing device for presentation on a display of the remote computing device.

2. The castable sonar device of claim 1 , further comprising a wide beam sonar transmitter configured to transmit sonar beams into the underwater environment, wherein the phased array is configured to receive sonar returns corresponding to the sonar beams.

3. The castable sonar device of claim 1 , wherein the phased array is configured to transmit sonar beams into the underwater environment and receive sonar returns therefrom.

4. The castable sonar device of claim 3 , wherein the phased array transmits frequency steered sonar beams.

5. The castable sonar device of claim 1 , wherein the determined angle corresponding to the sonar return associated with the object is used to generate a three-dimensional position of the object in the underwater environment for the sonar image.

6. The castable sonar device of claim 1 , wherein the determined angle corresponding to the sonar return associated with the object is used to generate a two-dimensional position of the object in the underwater environment for the sonar image.

7. The castable sonar device of claim 1 further comprising a location sensor configured to determine the position of the castable sonar device, wherein the processing circuitry is configured to:

determine a current position of the castable sonar device; and

transmit the current position of the castable sonar device to the remote computing device.

8. The castable sonar device of claim 7 , further comprising a propulsion system configured to propel the castable sonar device along a surface of the body of water, wherein the processing circuitry is configured to:

receive instructions from the remote computing device to move to a location; and

cause the propulsion system to operate to cause the castable sonar device to move to the location.

9. The castable sonar device of claim 8 , wherein the processing circuitry is configured to maintain the castable sonar device within a predetermined distance threshold from a second castable sonar device such that the castable sonar device and the second castable sonar device form an array to provide increased sonar coverage of the underwater environment.

10. The castable sonar device of claim 1 further comprising:

an attachment for a lure;

a motion sensor configured to detect motion corresponding to a bite; and

a light indicator,

wherein the processing circuitry is configured to:

receive motion data from the motion sensor;

determine, based on the motion data, occurrence of a bite; and

cause the light indicator to illuminate to provide an indication of the occurrence of the bite.

11. The castable sonar device of claim 1 further comprising a memory, wherein the processing circuitry is configured to:

determine a signal connection strength between the wireless communication element and the remote computing device; and

save in the memory, in an instance in which the signal connection strength is below a minimum signal connection strength threshold, the sonar image for later transmission to the remote computing device once the signal connection strength increases above the minimum signal connection strength threshold.

12. The castable sonar device of claim 1 further comprising a dispense mechanism configured to dispense at least one of an aroma, chum, or a chemical attractant into the underwater environment, wherein the processing circuitry is configured to cause the dispense mechanism to cause dispensing of the aroma, the chum, or the chemical attractant into the underwater environment.

13. The castable sonar device of claim 1 , wherein the transducer elements are affixed to a printed circuit board (PCB), wherein each of the plurality of transducer elements is electrically connected to traces on the PCB.

14. A system comprising:

a castable sonar device, the castable sonar device comprising:

a housing configured to float on a body of water above an underwater environment, wherein the housing comprises a tether connection feature configured to connect to a tether or fishing line;

a power source positioned within the housing;

a transducer assembly positioned within the housing, wherein the transducer assembly comprises:

a transducer array positioned within the housing and aimed downwardly therefrom, wherein the transducer array comprises a phased array, wherein the phased array comprises a plurality of transducer elements, wherein each of the plurality of transducer elements is configured to receive phased array sonar returns from the underwater environment;

a wireless communication element configured to transmit one or more signals to and receive one or more signals from a remote computing device; and

processing circuitry provided within the housing, wherein the processing circuitry is configured to:

receive one or more phased array sonar returns from the transducer array;

process the one or more phased array sonar returns to generate phased array sonar return data corresponding to the underwater environment;

generate, based on the phased array sonar return data, a sonar image corresponding to the underwater environment, wherein generating phased array sonar return data comprises determining an angle, with respect to a water line of the body of water, of a sonar return associated with an object in the underwater environment based on a phase difference between sonar returns associated with the object that are received at two or more of the plurality of transducer elements of the phased array; and

transmit, via the wireless communication element, the sonar image to the remote computing device for presentation on a display of the remote computing device; and

the remote computing device comprising:

a wireless communication element configured to receive the sonar image from the castable sonar device;

a user interface comprising the display; and

processing circuitry configured to:

receive the sonar image from the castable sonar device; and

cause presentation of the sonar image on the display of the remote computing device.

15. The system of claim 14 , wherein the remote computing device comprises one of a mobile computing device or a marine electronic device associated with a vessel.

16. The system of claim 14 , wherein the castable sonar device further comprises a location sensor configured to determine the position of the castable sonar device, wherein the processing circuitry of the castable sonar device is further configured to:

determine a current position of the castable sonar device; and

transmit the current position of the castable sonar device to the remote computing device.

17. The system of claim 14 , wherein the transducer elements are affixed to a printed circuit board (PCB), wherein each of the plurality of transducer elements is electrically connected to traces on the PCB.

18. The system of claim 14 , wherein the determined angle corresponding to the sonar return associated with the object is used to generate a three-dimensional position of the object in the underwater environment for the sonar image.

19. The system of claim 14 , wherein the determined angle corresponding to the sonar return associated with the object is used to generate a two-dimensional position of the object in the underwater environment for the sonar image.

20. A system comprising:

a castable sonar device, the castable sonar device comprising:

a housing configured to float on a body of water above an underwater environment, wherein the housing comprises a tether connection configured to connect to a tether or fishing line;

a power source positioned within the housing;

a transducer assembly positioned within the housing, wherein the transducer assembly comprises:

a transducer array positioned within the housing and aimed downwardly therefrom, wherein the transducer array comprises a phased array, wherein the phased array comprises a plurality of transducer elements, wherein each of the plurality of transducer elements is configured to receive phased array sonar returns from the underwater environment;

a wireless communication element configured to transmit one or more signals to and receive one or more signals from a remote computing device; and

processing circuitry provided within the housing, wherein the processing circuitry is configured to:

receive one or more phased array sonar returns from the transducer array; and

transmit, via the wireless communication element, the one or more phased array sonar returns to the remote computing device; and

the remote computing device comprising:

a wireless communication element configured to receive one or more signals from the castable sonar device;

a user interface comprising a display; and

processing circuitry configured to:

receive the one or more phased array sonar returns from the castable sonar device;

process the one or more phased array sonar returns to generate phased array sonar return data corresponding to the underwater environment, wherein generating phased array sonar return data comprises determining an angle, with respect to a water line of the body of water, of a sonar return associated with an object in the underwater environment based on a phase difference between sonar returns associated with the object that are received at two or more of the plurality of transducer elements of the phased array;

generate, based on the phased array sonar return data, a sonar image corresponding to the underwater environment; and

cause presentation of the sonar image on the display of the remote computing device.