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A self calibration algorithm for direction flnding in the presence of arbitrary shape 3D scatterers of resonating size is presented. This algorithm removes the efiects of mutual coupling and 3D scatterers on direction of arrival estimation. The scatterers and wire type antenna array are excited by incident plane waves of arbitrary direction. The 3D scatterers shape is approximated as a sphere, thus spherical harmonics are assumed to be originated in response to the plane wave excitation. The algorithm requires the location of the scatterers with reference to antenna elements. However, knowledge of exact shape of scatterers is not required. Moreover, scatterers may be located in near or far flelds. The work is supported by numerical examples for difierent scenarios of multiple incident waves and scatterers.

DIRECTION FINDING IN THE PRESENCE OF NEAR ZONE RESONANT SIZE SCATTERERS