Recall that each column of corresponds to an impulse response. I therefore apply column scaling to imaging operators implemented as push operators and solve the system

(42) |

In equation equ-dat the imaging operator is applied after the data
have been normalized by and, consequently, I will refer
to this normalization as *data normalization*.
Similar to the imaging fold, is
normalization by the coverage of the modeling operator (where ).

1/18/2001