Adaptive digital beamforming for super-resolution angle estimation in jamming

This paper describes a technique for maintaining angle super-resolution capability of multiple sources in jamming. This technique exploits flexibility provided by digital beamforming (DBF) array to form adaptive sub-arrays or adaptive beams in canceling jamming, followed by super-resolution processing for determining the number of sources and then estimating the corresponding directions-of-arrival (DOAs). In this arrangement, super-resolution capability in angle estimation of multiple sources can be maintained while jamming is canceled in the sub-array based or the beamspace based pre-processing stage.