Wireless terminal test device and carrier frequency variation display method for the same

A carrier frequency variation display method for a wireless terminal test device that simulates communication with a wireless terminal via a satellite to perform a test for the wireless terminal, the carrier frequency variation display method comprising:

• a step of calculating a satellite orbit based on position information and a movement speed of the satellite at a start of measurement;
• a step of calculating a Doppler shift amount between the satellite and the wireless terminal based on the satellite orbit and position information of the wireless terminal;
• a step of displaying, as theoretical values, a difference between a carrier frequency of a downlink signal and a carrier frequency at the start of the measurement and a difference between a carrier frequency of an uplink signal and the carrier frequency at the start of the measurement, based on the calculated Doppler shift amount;
• and
• a step of displaying, as a measured value, a difference between a carrier frequency of an uplink signal after a Doppler shift is removed and the carrier frequency at the start of the measurement, based on the calculated Doppler shift amount.