Angular Super-Resolution of Multi-Channel APAR in Interference Environments

Aiming to resolve azimuth-dense targets in interference environments, the radar needs have ability of single snap echo angular super-resolution with anti-interference. To solve problem, algorithm based on while anti-interference blocking matrix method is studied for active phased array (APAR) this paper. Since conventional MUSIC and iterative adaptive (IAA) are limited echo, re-weighted least squares (IRLS) under p-norm constraint proposed. Further, near main lobe suppression enhanced by diagonal loading method. The performance differences IAA IRLS algorithms single-target detection double-target analyzed detail numerical simulation three scenes no interference, side-lobe near-main-lobe interference. results show that proposed can effectively problem target angle estimation sample an environment, including main-lobe