621.391.1We perform synthesis and analysis of the maximum-likelihood detector of an ultra-wideband quasi radio signal whose duration may amount to several periods or even a fraction of a period of harmonic oscillation with unknown amplitude and phase. Characteristics of the classical quadrature detector on receipt of the ultra-wideband quasi radio signal are found. Applicability conditions of the model of a narrow-band radio signal for solving the detection problem to specified accuracy are formulated.

We synthesize and analyze the maximum-likely detector of an ultra-wideband quasi-radio signal whose duration can be several periods or even a part of the period of harmonic oscillation with unknown amplitude, phase, and arrival time. Characteristics of the classical quadrature detector during reception of an ultra-wideband quasi-radio signal are found. The results of statistical simulation of detection algorithms are presented.