A Monopulse Scheme in Radar Angle-Measurement Based on Beam-Comparison

Due to disadvantages such as over reliance for the ratio curve, low accuracy and poor anti-interference ability for traditional method of monopulse techniques in angle-measuring, a new scheme of monopulse technique based on Beam-Comparison is proposed. The essential idea of the proposed scheme is not to depend on the ratio curve, but obtain angle-information by comparing amplitude of beams. Comparisons between the tradition and the proposed scheme by MATLAB on accuracy, anti-interference ability, portability and calculation are made to demonstrate performance of new scheme. The results show direction-error of new scheme is approaching 10(-6) magnitude when the tradition is 10(-1), in the noise condition with SNR=0db, new scheme also has a better performance.