For decades, radio engineering systems have evolved and continue to actively develop - systems that extract, transmit, or destroy information using radio waves. The radio waves carrying this or that information are called a radio signal. Thus, for radio systems, a characteristic feature is the use of radio signals. In connection with the development of electronic computing techniques and algorithms for processing radio signals undergo certain changes. Reception / transmission facilities, technologies and methods for protecting the transmitted information are also being improved. For this reason, qualitative methods are needed to determine the radio parameters of signals with a view to their further processing. The paper discusses methods for determining such characteristics as carrier frequency, manipulation rate, and modulation type for phase-shifted signals. The task of determining these parameters is currently relevant for several reasons: the definition of parameters will help identify the transmitting de