A self-calibration technique for a DOA array with near-zone scatterers

This paper describes an iterative self-calibration technique for a direction of arrival (DOA) array to automatically remove the effects of mutual coupling and near-zone resonant size scatterers whose locations are known but whose geometries are unknown. Beginning with the array currents contaminated by both mutual coupling and near-zone scatterers, the iterative method determines the uncontaminated method of moments voltage vector, and eventually the DOAs. Numerical examples illustrate the convergence of the method and its ability to deal with multiple scatterers and multiple incident waves.