Positioning system and positioning method

A positioning method suitable for positioning a vehicle, wherein a movable base station and a rover are disposed on the vehicle, and the positioning method comprises:

• receiving a radio data via the movable base station disposed on the vehicle at a first time point, wherein the movable base station is located at a movable base station position at the first time point, and the rover is located at a rover position at the first time point;
• performing a real-time kinematic calculation according to the radio data via the processor when the vehicle is moved at a second time point to obtain the rover position of the second time point;
• obtaining an attitude angle variation of the rover between the first time point and the second time point;
• calculating the movable base station position at the second time point according to the rover position of the second time point and the attitude angle variation;
• positioning the vehicle of the second time point according to the movable base station position and the rover position of the second time point;
• and
• calculating a carrier phase difference between the movable base station and the rover at the second time point to update the radio data at the second time point.