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A new monopulse radar signal processing technique is described, which requires only a single IF amplifer channel to instantaneously process the returns from all targets within a beamwidth. The basic signal processor consists of a wide-band amplifier-hard limiter, followed by appropriate band-pass filtering. The mathematical basis for its operation is developed and corroborating experimental results are given. Angle accuracy curves for a sum and difference monopulse system are derived as a function of input SNR.