Patent Document ID: 20020111762
Application ID: 09740762
Patent Flag: 0

Claim One:
1. A method of obtaining a continuous indication of the angular orientation &sgr; M of a rotating body relative to, and traveling through, a magnetic field, comprising the steps of: placing a sensor array having at least one magnetometer within said body prior to said travel, in a manner that said magnetometer will provide an output signal which varies between positive and negative values, said output signal having periodic zero crossings, during said travel as said body rotates; separately generating a look-up table of i) angular orientations &sgr; M vs. ii) body roll angle discriminants &PHgr;, based upon said zero crossings; obtaining sequential time discriminants {overscore (&PHgr;)} based upon said zero crossings, during said travel; accessing said look-up table to compare said time discriminants with said body roll angle discriminants to obtain values for said angular orientation, experienced during said travel.