Monopulse characteristic based on full digital weighting for phased array radar at subarray level

Subarray configuration is usually adopted in phased array radar where monopulse is used to detect the target angle by using sum and difference beam. While analog (Taylor and Bayliss taper) weighting is usually used to suppress the sidelobes of sum and difference beam. This paper presents an approach for phased array radar at subarray level based on full digital weighting at subarray level, therefore it is reduced for the hardware cost and complexity greatly compared to conventional analog weighting at element level, and it takes full advantage of the flexibility of digital processing. Simulation results indicate that the monopulse characteristics obtained by full digital weighting at subarray level quite approximate to that obtained by conventional analog weighting at element level.