Analysis of DOA and adaptive beam forming including mutual coupling

In the case of mutual coupling the DOA (Direction of Arrival) and adaptive beam forming algorithms are analyzed. In practice the mutual coupling between the array elements can not be avoided. Thus the precision of DOA and beam forming performance are affected because of the change of array response vector aroused by the mutual coupling. The algorithms of DOA are deduced with the equivalent network method when the mutual coupling is considered. For the beam forming pattern in the uniform line array the mutual coupling compensation is realized with a new iterative technique proposed. The simulation results show that the compensation is effective.