Determining the Accuracy of the Measurement of Arrival Time of the Useful Signal by the Meter for Non-Energy Parameters of the Signal

Abstract

The analysis of the influence of multiplicative noise acting simultaneously with additive noise on the accuracy of measurement of arrival time of the useful signal by the tracking meter is carried out. The input signal is given as a sequence of coherent and incoherent pulses. It is shown that a very low level of additive noise leads to the fact that multiplicative noise does not affect the steepness of the discriminatory characteristic. It is noted that an increase in the spectrum width of the noise modulation function leads to an increase in measurement errors due to a decrease in the power of the input signal. However, the power reduction can be compensated by the effect of automatic gain control. The value of the accuracy characteristics of the tracking meter under the influence of multiplicative noise is determined by the steepness of the discriminatory characteristic, the coefficients determining the normalizing effect of automatic gain control in the presence and absence of noise, as well as the spectral density of fluctuations at the discriminator output.