SYSTEM AND METHOD FOR NAVIGATING A ROBOTIC LAWNMOWER INTO A DOCKING POSITION

A robotic lawnmower system comprising a charging station (210) and a robotic lawnmower (100), the charging station comprising a signal generator (240) to which a navigation signal cable (260; 250) is to be connected, the signal generator (240) being configured to transmit a signal (265; 245) through the navigation signal cable (260; 250), and the robotic lawnmower (100) comprising: a propulsion system (130, 50); a sensor (170) configured to sense field values of magnetic fields generated by the signal (265; 245) in the navigation signal cable (260; 250); and a controller (110) configured to determine that the robotic lawnmower (100) is in a docking position; record the field value(s) of the sensed signal; control the propulsion system (130, 150) to reverse out of said docking position; and to control the propulsion system (130,150) to enter into said docking position by sensing a current field value; comparing the current field value to the stored field value(s); and determining how to navigate the robotic lawnmower (100) based on the comparison and navigating accordingly.