GENERALIZED INVERSE MATRIX BASED BACKCALCULATION OF PAVEMENT STRUCTURE AND THE OPTIMAL SENSOR LOCATIONS

Abstract

Pavement layer moduli are estimated from surface deflections measured by FWD in order to diagonize a pavement structure. It is shown that strong similarity exists between a generalized inverse matrix method employed he and the Gauss-Newton method Sensitivity equation with respect to error is derived. By using the sensitivity with respect to error, optimal sensor locations winch minimize the effect of measurement and model parameter errors are obtained by exaustive sank