Magnetic north detecting device and magnetic north detecting method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 8, 2005
Grant Date -
Jun 2, 2005
app pub date -
Nov 4, 2004
filing date -
Nov 10, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The magnetic north detecting device comprises: a 3-dimensional geomagnetism sensor unit including three geomagnetism sensors for detecting respective components of a geomagnetism magnetic field intensity in respective directions of three coordinate axes perpendicular to each other; and a 3-dimensional operation functional section for carrying out an operation on the basis of the components of the geomagnetism magnetic field intensity detected by the geomagnetism sensors, and calculating a magnetic north direction of the geomagnetism, and the 3-dimensional operation functional section carries out the operation and calculates the magnetic north direction of the geomagnetism, based on two assumptions that: (i) at least one axis of three coordinate axes of the 3-dimensional geomagnetism sensor unit is level to the earth surface; and (ii) an angle of a geomagnetism magnetic field vector which is calculated from the detected components of the geomagnetism magnetic field intensity, referring to the earth surface, coincides with a dip angle of the geomagnetism which is assumed beforehand.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully