System and method for supporting return home mode of drone used on ship

A method for supporting a return home mode using a system for supporting a return home mode of a drone used on a ship, comprising:

• receiving, by a drone control device (100), GPS reception signal strength information at a first GPS receiver (110) built therein;
• determining, by the drone control device, whether the GPS reception signal strength is greater than or equal to a set strength before the drone takes off;
• displaying drone takeoff feasibility information on a display unit (120) of the drone control device in response to determining that the GPS reception signal strength is greater than or equal to the set strength, the drone takeoff feasibility information indicating that the drone is allowed to take off;
• determining, by a control unit (230) installed in the drone, whether return home information is received from the drone control device after the drone takes off;
• receiving ship position information from the drone control device and receiving drone position information from a second GPS receiver (220) installed in the drone, by the control unit, when the return home information is received;
• controlling, by the control unit, a drone drive motor (M) by generating a drone drive motor control signal based on the ship position information and the drone position information;
• determining, by the control unit, whether a difference between the drone position and the ship position is less than or equal to a set distance;
• and
• stopping, by the control unit, the drone drive motor when the difference between the drone position and the ship position is less than or equal to the set distance.