An improved constrained quasi-newton method for the solution of inverse electromagnetic problems

Abstract

This paper presents the formulation of an improved direct technique called modified constrained quasiNewton method (PLBA-CR) achieved with constraint correction and objective reduction algorithms which may he used for the solution of inverse electromagnetic problems. Two problems are discussed and the results are compared with the quadratic extended penalty function (QUAP) and the augmented Lagrangian multiplier (ALM) method in terms of accuracy and calculations required. The results show that the PLBA-CR technique is substantially faster in terms of time computation and would appear to have certain important advantages over the other methods. © 1996 IEEE.