This article (see also [1, 2]) considers new methods for multiple electromagnetic source localization
using sensors whose output is a vector corresponding to the complete electric andmagneticfields at the
sensor. These sensors, which will be called vector sensors, can consist for example of two orthogonal
triads of scalar sensors that measure the electric and magnetic field components. Our approach is in
contrast to other articles in this chapter that employ sensor arrays in which the output of each sensor
is a scalar corresponding, for example, to a scalar function of the electric field....