ESTIMATED-AZIMUTH-ANGLE ASSESSMENT DEVICE, MOBILE TERMINAL DEVICE, COMPUTER-READABLE STORAGE MEDIUM, CONTROL METHOD FOR ESTIMATED-AZIMUTH-ANGLE ASSESSMENT DEVICE , AND POSITIONING DEVICE

摘要

An angle offset judging device (1) includes: an azimuth histogram generating section (126) for obtaining an appearance frequency of estimated azimuths; and an evaluating section (127) for making an evaluation of whether or not the appearance frequency thus obtained shows a tendency which is observed in a case where an azimuth is properly estimated under a binding condition concerning an advancing direction of a movement of a moving body.

主权项

1. An estimated azimuth evaluating device comprising:
an angular velocity obtaining section for obtaining an angular velocity around a gravity axis during a movement of a moving body, which angular velocity has been measured by a three-axis angular velocity sensor; a bias component candidate generating section for generating a candidate for a bias component of the three-axis angular velocity sensor; an estimating section for estimating an estimated azimuth of the movement of the moving body in accordance with (i) the angular velocity obtained by the angular velocity obtaining section and (ii) the candidate for the bias component; an appearance frequency obtaining section for obtaining an appearance frequency of estimated azimuths; and an evaluating section for making an evaluation of whether or not the appearance frequency obtained by the appearance frequency obtaining section shows a tendency which is observed in a case where an azimuth is properly estimated under a binding condition concerning an advancing direction of the movement of the moving body.