GPS trajectory data complementing method based on third-order Bezier curve and interpolation
A Bezier curve and trajectory data technology, applied in the field of GPS trajectory data processing, can solve the problems of GPS trajectory data offset, too much calculation data, and complex implementation, achieving high accuracy, simple calculation logic, and low implementation cost Effect
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[0028] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0029] The GPS track data completion method based on the third-order Bezier curve and interpolation of the present invention, the overall process is as follows figure 1 shown. The following combines the GPS track data generated by an Android device to repair and complete it to illustrate the implementation steps.
[0030] Step 1. Collect GPS track data for a period of time T through the Android device, and sort all track points according to the time sequence. The track points include five attributes: collection time, longitude, latitude, speed and direction of motion. The true north of the GPS direction is set as 0°, and the clockwise angle between the GPS direction and the true north direction is the direction of motion.
[0031] The formal description of GPS trajectory is: Tra T =(P 1 ,P 2 ,...,P i ,...,P n ); where...
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