An electronic device comprising: a sensor ; an antenna ; a positioning circuit configured to receive satellite signals through the antenna using a specified frequency band; a resonant frequency adjustment circuit configured to adjust a resonant frequency of the antenna ; and a processor , wherein the processor is configured to: identify whether the electronic device is in water using the sensor ; on the basis of the sensor identifying that the electronic device is not in water, adjust the resonant frequency of the antenna to a first frequency band specified according to a first permittivity of air in relation to the specified first frequency band using the resonant frequency adjustment circuit ; on the basis of the sensor identifying that the electronic device is in water, adjust the resonant frequency of the antenna to a second frequency band specified according to a second permittivity of water in relation to the specified second frequency band using the resonant frequency adjustment circuit ; receive the satellite signals through the antenna of which the resonant frequency has been adjusted to a frequency band corresponding to one of the first frequency band or the second frequency band using the positioning circuit ; and determine a position of the electronic device primarily on a basis of the received satellite signals using the positioning circuit . a sensor ; an antenna ; a positioning circuit configured to receive satellite signals through the antenna using a specified frequency band; a resonant frequency adjustment circuit configured to adjust a resonant frequency of the antenna ; and a processor , wherein the processor is configured to: identify whether the electronic device is in water using the sensor ; on the basis of the sensor identifying that the electronic device is not in water, adjust the resonant frequency of the antenna to a first frequency band specified according to a first permittivity of air in relation to the specified first frequency band using the resonant frequency adjustment circuit ; on the basis of the sensor identifying that the electronic device is in water, adjust the resonant frequency of the antenna to a second frequency band specified according to a second permittivity of water in relation to the specified second frequency band using the resonant frequency adjustment circuit ; receive the satellite signals through the antenna of which the resonant frequency has been adjusted to a frequency band corresponding to one of the first frequency band or the second frequency band using the positioning circuit ; and determine a position of the electronic device primarily on a basis of the received satellite signals using the positioning circuit . identify whether the electronic device is in water using the sensor ; on the basis of the sensor identifying that the electronic device is not in water, adjust the resonant frequency of the antenna to a first frequency band specified according to a first permittivity of air in relation to the specified first frequency band using the resonant frequency adjustment circuit ; on the basis of the sensor identifying that the electronic device is in water, adjust the resonant frequency of the antenna to a second frequency band specified according to a second permittivity of water in relation to the specified second frequency band using the resonant frequency adjustment circuit ; receive the satellite signals through the antenna of which the resonant frequency has been adjusted to a frequency band corresponding to one of the first frequency band or the second frequency band using the positioning circuit ; and determine a position of the electronic device primarily on a basis of the received satellite signals using the positioning circuit . <EOS>