Vasylkivskyi N. Methods and means for increase of effectiveness of phase jitter signals evaluation in digital chains

The dissertation is dedicated to the methods development of effectiveness increase in phase jitter evaluation of the signals in digital chains of telecommunication means. The new method of spectral estimation of signals' phase jitter is suggested. On the contrary to the previous methods, the given one provides multistage processing of the samples from phase jitter signal with optimal window deliberation of data segments being processed. It provides estimation dispersion decrease of spectral density of phase jitter signal power. It has been proved, that the summary performance criterion of the given method greatly excels the similar criterion of classical approach in phase jitter evaluation. The new method of volume expansion of analog-digital conversion tract is set. On the contrary to the present methods, the new one takes into account phase instability value of each ADC (analog-to-digital converter) module. The method of quick-operating analog-digital conversion of phase jitter signals with graded up dynamic parameters has been improved. In this case, secondary digital processing of conversion results of ADC individual microelectronic circuit is used. The structure of phase jitter evaluator has been developed on the basis of the suggested engineering building technique. The structure of an automation device is also suggested as hardware-software realization of spectral estimation of phase jitter signals.