Monitoring and analysis of modulated signals in the HF band

Perspective method for the monitoring and on-line modulation analysis in the HF band is presented in this paper. The workplace for the on-line analysis of analog and digital modulations consists from the digital receiver IZ225 and a PC with adequate SW. The original program for the on-line modulation signal analysis was designed in the programming environment CipherCAD. The type of modulation, its basic features, e.g. carrier frequency, modulation velocity, etc., and structure of the data stream was analyzed. Results obtained by the on-line modulation analysis demonstrate that the chosen method of monitoring and on-line modulation analysis is a perspective method for use in real applications.