This book introduces the first step toward the implementation of the first new invented ghost radar at the world. It explains how the genetic algorithm is implemented through actual antenna arrays for direction of arrival estimation algorithm within the smart antenna systems. Smart antenna system is one of the most important systems in the wireless communication systems. Direction of arrival estimation algorithm has a necessary role to correctly define the direction of arrivals of the desired signals.Recently, the optimization methods are used broadly in the techniques for the direction of arrival estimation which are used to improve the accuracy and resolution of these techniques. Genetic Algorithm is a numerical technique used coherently with a non conventional least squares optimization method for correctly estimate the direction of arrival spectrum of the desired signals located in any hardly EM-affected signals environment.