a reception section adapted to receive a signal from a predetermined satellite as a reception signal;

a signal processing section adapted to perform a process of determining whether or not the reception signal includes a specific message;

a positioning process section adapted to perform a positioning process of acquiring a current position when the reception signal includes the specific message, wherein the specific message notifies information regarding a disaster and directly identifies a disaster type, and the positioning process section performs the positioning process when the reception signal includes the specific message and where the disaster has a predetermined value as a priority level, the priority level being correlated to the identified disaster type; and

a power supply control section adapted to turn on power for the positioning process section when it is determined that the reception signal includes the specific message, wherein

the signal processing section includes a plurality of satellite processing units to which different satellites are assigned, individually, and

the power supply control section turns on, of the plurality of satellite processing units, the power for only a predetermined number of satellite processing units when it is determined that the reception signal does not include the specific message and turns on, of the plurality of satellite processing units, the power for more satellite processing units than the predetermined number when it is determined that the reception signal includes the specific message.