1. A method of minimizing signal measurement inaccuracy effects in a signal processing system, comprising: assigning a probability distribution to each of a first number of delta values to form a corresponding first number of probability distribution functions, said delta values representing differences between pairs of measured signal values and corresponding model values; associating at least some of said first number of probability distribution functions with each equation in a system of equations defining a second number of unknown parameter values; solving said system of equations for a domain of possible solutions; and determining a unique solution for said second number of unknown parameter values from said domain of possible solutions.