(Publishing House of Lviv Polytechnic National University, 2016) Buchma, Ihor
This paper analyzes the errors entailed by the
signal amplitude inequality when measuring the phase shift
among low frequency harmonic signals for algorithmic
sum-difference methods. It is shown that additional phase
shifts of summary and difference signals caused by the
inequality of compared signals in some methods affect the
errors, whereas in others they do not. A method in which
there is no additive component of the error has been found.
This method has been admitted to be the best to measure
small phase shifts. The method for measuring the phase shift, which
enables to avoid errors due to amplitude inequality of
compared signals has been proposed.
