Engineering Physics Annotation << Back RECOVERY OF THE SIGNAL RADIO IMAGE USING THE METHOD OF RADIO-PHOTON MULTIPLEX CONVERSION UNDER THE INFLUENCE OF INTERFERENCE INTERFERENCE A.V. SHILTSIN, M.S. KOSTIN, A.K. NIKASHIN, A.S. KORCHAGIN The paper presents the construction and analysis of parametric variations of the circuits of the softwarenumerical model of the radio-photon multiplex converter of ultrashort radio pulses, as well as the softwarenumerical emulation and algorithmization of the stroboscopic method for recording and processing radio images generated by a digital twin - an electrodynamic model of a probed object, represented by an aircrafttype drone. A radiophotonic method is proposed for an alternative solution of radiophysical problems of stroboscopic recording and recovery of ultrashort radio pulses (USPs) of nanosecond duration with subnanosecond resolution, which constitute the radio image signature of irradiated objects for radiosensor signal-tomographic authentication systems. In the Simulink environment, software models of radio-photon multiplex converters have been developed that make it possible to numerically analyze and investigate the effectiveness of the method of optical regeneration of radio pulses using a fractional multiplexing scheme with delayed feedback. Simulation of signal radio image reconstruction under the conditions of multipath (interference) propagation of a probing pulse and a scattered signal radio image is carried out. It is shown that a radio-photon multiplex converter with 16 delay lines in 25 iterations is able to restore the radio image of an object with a correlation coefficient of more than 0.9 between the reference and reconstructed pulses at a signal-to-noise ratio (SNR) of at least 9 dB. Keywords: radio-photon multiplex converter, USP signal, radio sensor system, radio image, interference noise, Rician model. DOI: 10.25791/infizik.7.2023.1345 Pp. 41-48.