Course error correctingmethod and apparatus and magnetic field detection method and apparatus
A technology of heading error and magnetic field measurement, which is applied to the size/direction of the magnetic field, navigation through speed/acceleration measurement, etc., and can solve problems such as errors
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[0045] The present invention will be further described below in conjunction with accompanying drawing.
[0046] In the present invention, if it is determined that the magnetic field at a certain step during the person's traveling process is a steady-state magnetic field, the course angle obtained from the magnetic field data at each moment in the corresponding static time interval is corrected.
[0047] The steady-state magnetic field is a judgmental description of the stability of the geomagnetic field. Because the geomagnetic field will be subject to different degrees of pollution interference in complex indoor or outdoor environments, it will cause interference in the heading angle calculated based on it, and indirectly affect the follow-up gyroscope. Heading angle correction. In the steady-state magnetic field, within a fixed time interval, the sampling values of the total strength of multiple local geomagnetic fields obtained by the magnetic sensor remain stable, or the...
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