CPC G01C 21/16 (2013.01) [A61B 5/1126 (2013.01); A61B 5/6828 (2013.01); G01C 25/005 (2013.01); G01P 13/00 (2013.01); A61B 2505/09 (2013.01); A61B 2560/0223 (2013.01); A61B 2562/0219 (2013.01); A61B 2562/0223 (2013.01)] | 20 Claims |
1. A method of compensating for heading errors of a plurality of inertial measurement units, the method comprising:
providing first and second inertial measurement units each comprising an accelerometer and a gyroscope;
arranging the first and second inertial measurement units on first and second body members of a person, the first and second body members being connected by a joint;
obtaining a first orientation measurement of the first unit;
computing a heading rotation value for containing the first orientation measurement within an
axis plane of the joint based on a second orientation measurement of the second
measurement unit; and
modifying the first orientation measurement or the second orientation measurement by applying a rotation based on the heading rotation value computed.
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