Patent ID: 8224573
Filing Date: 2012-07-17
Classification: G01C,G01S

Abstract:
1. An azimuth detecting device mounted in a mobile object, comprising: a satellite signal receiver; a geomagnetic sensor; and a computing unit configured to: calculate a traveling azimuth of the mobile object on the basis of a radio wave received by the satellite signal receiver, statistically calculate an unknown geomagnetic declination and/or an unknown geomagnetic inclination by using the calculated traveling azimuth and an output of the geomagnetic sensor on the basis of a relational expression representing a relationship between the traveling azimuth, the output of the geomagnetic sensor, and the geomagnetic declination and/or the geomagnetic inclination, correct the output of the geomagnetic sensor by using the calculated geomagnetic declination and/or the calculated geomagnetic inclination, and calculate an azimuth of the mobile object on the basis of the corrected output of the geomagnetic sensor.