Measurement apparatus, measurement method, and recording medium

A measurement method executed by a measurement system, the measurement system including a measurement apparatus and a measurement mechanism, the measurement method comprising:

• first acquiring, by the measurement apparatus, based on a reference positional relationship between an antenna included in the measuring mechanism and a target transmitting a target radio wave, a first received radio wave phase indicating a radio wave phase of the target radio wave received by the antenna from the target;
• calculating, by the measurement apparatus, based on the first received radio wave phase, an ideal received radio wave phase at each position of the antenna changed by moving a support member included in the measuring mechanism, the ideal received radio wave phase indicating an ideal radio wave phase of the target radio wave received by the antenna from the target;
• second acquiring, by the measurement apparatus, a second received radio wave phase at each position of the antenna changed by moving the support member, the second received radio wave phase indicating the radio wave phase of the target radio wave received by the antenna from the target;
• and
• performing, by the measurement apparatus, correction based on distortion information indicating a distortion of the support member, the distortion information being calculated from a phase difference between the ideal received radio wave phase and the second received radio wave phase.

A non-transitory computer-readable recording medium on which a measurement program including programmed instructions executed by a computer in a measurement system is recorded, the programmed instructions causing the computer to:

• first acquire, by the measurement apparatus, based on a reference positional relationship between an antenna included in the measuring mechanism and a target transmitting a target radio wave, a first received radio wave phase indicating a radio wave phase of the target radio wave received by the antenna from the target;
• calculate, by the measurement apparatus, based on the first received radio wave phase, an ideal received radio wave phase at each position of the antenna changed by moving a support member included in the measuring mechanism, the ideal received radio wave phase indicating an ideal radio wave phase of the target radio wave received by the antenna from the target;
• second acquire, by the measurement apparatus, a second received radio wave phase at each position of the antenna changed by moving the support member, the second received radio wave phase indicating the radio wave phase of the target radio wave received by the antenna from the target;
• and
• perform, by the measurement apparatus, correction based on distortion information indicating a distortion of the support member, the distortion information being calculated from a phase difference between the ideal received radio wave phase and the second received radio wave phase.