Simulation of the Passage of Radio Response through Electro-Optical Repeaters of Ultrashort Radio Pulses

Abstract

An electro-optical method is proposed for an alternative solution of the radio technical problem of stroboscopic recording and regeneration of ultrashort (nanosecond) radio pulses with subnanosecond resolution, which represent signatures of the radio image of irradiated objects for radiosensor signal-tomographic authentication systems. Software models of infraoptic repeaters are developed in the Simulink environment to numerically analyze and study the efficiency of the method of optical regeneration of radio pulses using a fractional multiplexing scheme with delayed feedback. A radio response from a digital twin of a target irradiated with a Gaussian ultrashort radio pulse is simulated with the aid of the Altair Feko electrodynamic simulation software. It is shown that an electro-optical repeater with 16 delay lines allows regeneration of a radio response from a target in 20 iterations with a correlation coefficient of greater than 0.9 between the reference and reconstructed pulses at a signal-to-noise ratio of no less than 9 dB.