Adaptive Monopulse Algorithm Based on Combining Sum Difference and Auxiliary Beams for Anti Jamming at Subarray Level
Digital array radar has a receiving channel on each element,then the computational complexity is high if general adaptive processing is used.Therefore,we need adaptive dimension reduced processing.An adaptive monopulse algorithm based on combining sum difference and auxiliary beams for anti jamming at subarray level is presented in this paper.The key point of the new algorithm is that high gain difference beams are used to suppress the MLJ and forming auxiliary beams pointing to the directions of SLJs for suppressing the corresponding SLJs simultaneously.Theoretical analysis and simulation results show that the new algorithm can suppress the mainlobe jamming(MLJ)and sidelobe jamming(SLJ)while maintaining monopulse ratio undistorted.Meanwhile,the new algorithm successfully solves the problem resulted from numerous elements in phased array system.