New Approaches in the Adaptive Array Processing Field

This paper presents an overview of modern array processing methods which have appeared recently. They are called “high resolution methods” because theoretically their resolving power increases with the observation time up to infinity, whereas it is limited by the signal to noise ratio in previous methods. This property is due to a more acute modeling of the medium. Besides the finite observation time, their limitations come from discrepancies between the model and the actual medium. Nevertheless, methods can be proposed to reduce their sensitivity.