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The Wald test and Crame/spl acute/r-Rao bound for misspecified models in electromagnetic source analysis

L.J. Waldorp, H.M. Huizenga, R.P.P.P. Grasman
2005 IEEE Transactions on Signal Processing  
Two different, previously suggested Wald tests in electromagnetic source analysis (EMSA) are examined: a test on source amplitudes and a test on the closeness of source pairs.  ...  An accurate estimate of the Cramér-Rao bound (CRB) is required for the use of the Wald test when not all assumptions are satisfied. The sandwich CRB is used for this purpose.  ...  A prerequisite for using the Wald test in the way described above is that a good estimate of the Cramér-Rao bound (CRB) of the parameters is available, even for approximate models.  ... 
doi:10.1109/tsp.2005.853213 fatcat:qwd56qj5v5favj7ovjteuc7nsi