Cookbook Procedure to Determine M (continued)

• 4. “Fix” E

• Each estimated E component will contain the “true” component plus contaminations from the other 3 “true” components

• For example:

  • EXest = 1*EXtrue + 2*EYtrue + 3*EZtrue + 4*EQtrue (p)

• If our first guess of M was “reasonable”:

• 1 >> 2, 3, & 4 (q)

• Using our knowledge of the true external fields and the estimated external fields, we can determine approximate values for 1, 2, 3, & 4

  • We use these estimated values of the various ’s to “correct” the estimated E value determined from the initial M & C matrices

Notes: