Method for calculating a swing trajectory of a golf club using radar sensing data, a radar sensing device using the same, and a recording medium readable by a computing device recording the method

A method for generating a swing trajectory of a golf club using data sensing of movement of a golf club head and a ball by a radar sensing device including a signal transmitter, a signal receiver, a signal analyzer, and a swing trajectory generator, the method comprising:

• transmitting a radar signal by the signal transmitter and receiving a reflected radar signal by the signal receiver, the reflected radar signal reflected from the ball and the golf club head;
• generating, by the signal analyzer, a radar sensing data including signal data for the ball and signal data for the golf club head by analyzing the reflected radar signal of the ball and the golf club head;
• specifying, by the swing trajectory generator, a time point on the signal data for the golf club head at the time when the signal data for the ball starts and determining an impact time point when the golf club head hits the ball;
• generating, by the swing trajectory generator, a swing trajectory area as a virtual area for indicating a swing trajectory of the golf club head from the radar sensing data;
• setting, by the swing trajectory generator, an impact position at the specified impact time point on the swing trajectory area;
• and
• generating, by the swing trajectory generator, the swing trajectory of the golf club by specifying coordinates of the golf club head at a plurality of sensing times before and after the impact time point on the swing trajectory area.