Title:
APPARATUS FOR CORRECTING AZIMUTH OF THREE-AXIS MEMS GEOMAGNETIC SENSOR, AND METHOD FOR CORRECTION
Document Type and Number:
WIPO Patent Application WO/2014/119824
Kind Code:
A1
Abstract:
The present invention relates to an apparatus for correcting an azimuth of a three-axis MEMS geomagnetic sensor, and a method for correction, the apparatus according to the present invention comprising: a planar magnetic vector calculation unit (100) for acquiring a planar magnetic vector, from the terrestrial magnetic field, measured by the three-axis MEMS geomagnetic sensor; a geomagnetic distortion identification unit (200) for deriving a magnetic vector relationship, expressed as an equation of an ellipse, and extracting a magnetic vector correction coefficient from a set of planar magnetic vectors collected by the planar magnetic vector calculation unit (100); and an azimuth calculation unit (300) for correcting a magnetic distortion by means of the correction coefficient extracted from the geomagnetic distortion identification unit (200) and calculating the azimuth.
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Inventors:
KIM TAE-YEON (KR)
PARK JIN-HA (KR)
KIM CHUNG-IL (KR)
PARK JIN-HA (KR)
KIM CHUNG-IL (KR)
Application Number:
PCT/KR2013/004694
Publication Date:
August 07, 2014
Filing Date:
May 29, 2013
Export Citation:
Assignee:
CORESENSE CO LTD (KR)
International Classes:
G01C19/36; G01C17/28; G01C17/38
Foreign References:
| KR20080026395A | 2008-03-25 | |||
| JP2006226810A | 2006-08-31 | |||
| JP2004309227A | 2004-11-04 | |||
| US5095631A | 1992-03-17 |
Other References:
KIM, TAE-YEON ET AL.: "On-line Magnetic Distortion Calibration Method for a Magnetometer", JOURNAL OF THE INSTITUTE OF CONTROL, ROBOTICS AND SYSTEMS, vol. 18, no. 9, 2012, pages 819 - 822
Attorney, Agent or Firm:
YOU, BYUNG SUN (KR)
유병선 (KR)
유병선 (KR)
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