Location detecting apparatus

Abstract

Abstract A location detecting apparatus comprising autonomous location detecting means (1, 2, 3) mounted in a moving body to calculate a distance traveled by said moving body and an estimated heading of said moving body and to detect an estimated location of said moving body on the basis of said distance traveled and said estimated heading, receiving means (11) for detecting a location of said moving body by receiving waves from satellites circling around the Earth in predetermined orbits and for providing location information corresponding to the detected location, means to detect a difference of location (δ) between said location detected by said receiving means (11) and said estimated location, location correcting means which corrects said estimated location to said location detected by said receiving means (11) when said difference of location (δ) is more than a first predetermined value (D1), a magnetic sensor (12) for detecting an heading of said moving body by sensing a geomagnetic field, and heading correcting means which corrects said estimated heading to said heading detected by said magnetic sensor (12), when said difference of location is more than said first predetermined value after said estimated location was corrected and before said moving body travels a predetermined distance.

Inventors

• 👤 Kazuo C/O Osaka Works Hirano

Bibliographic Details