Recent content by ChuckFinley

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    Mapping Coordinate Systems Using Quaternions

    After some digging on the internet, I was able to look at some source code from another research paper. The corrections that needed to be made are: R = Q^{-1}_{i}Q_{c} and \vec{a_{c}} = <-x,-y,z> Strangely, I don't understand why x and y become opposites but it does work. Any...
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    Mapping Coordinate Systems Using Quaternions

    During the course of working with inertial measurement units (IMU) I have run into a problem. The issue is that an IMU reports accelerations relative to the IMU's orientation rather than it's initial orientation. The IMU's initial orientation is the identity quaternion (1,0,0,0). All changes...