Closed-Loop Phase Calibration of Coherent Apertures for the Next Generation Radars

In this paper, closed-loop phase calibration for coherent aperture radars has been investigated. The idea of using multiple coherent radars is known as the next generation radar. In this method, the signal to noise ratio could be improved by N2 where N is the number of coherent radars; however, achieving this coherency is not feasible unless a phase calibration procedure is conducted. In this paper, utilizing the main target as the calibration target has been modeled and simulated. Simulation results have been employed to investigate the phase error associated with the closed-loop calibration method.