  Simultaneous estimation of range and angle of close emitters usually requires
a multidimensional search. This paper offers an algorithm to improve the
position of an element of any array designed on the basis of some certain or
random rules. In the proposed method one element moves on its original
direction, i.e., keeping the vertical distance to each source, to reach the
constellation with less CRB. The performance of this method has been
demonstrated through simulation and a comparison of the CRB with receptive
signals covariance matrix determinant has been made before and after the use of
this method.
