TILT ANGLE CALCULATION DEVICE AND TILT ANGLE CALCULATION METHOD

摘要

PROBLEM TO BE SOLVED: To calculate a tilt angle of a target with high accuracy.;SOLUTION: A tilt angle calculation device acquires positioning information of a target on which positioning has been performed based on a signal received from a satellite, speed information of the target, and acceleration information of the target. Furthermore, the tilt angle calculation device successively calculates a correction value for correcting the acceleration information. Moreover, the tilt angle calculation device calculates a tilt angle of the target based on the correction value, the speed information and the acceleration information. In addition, when calculating the correction value, the tilt angle calculation device successively calculates a temporary correction value which is a provisional correction value, based on the acceleration information, derives a weight coefficient with respect to the temporary correction value for statistic processing in accordance with at least either an altitude change of the target based on the positioning information or a speed change of the target based on the speed information, and calculates the correction value through the statistic processing using the weight coefficient, the temporary correction value and the correction value calculated previously.;COPYRIGHT: (C)2013,JPO&INPIT