An automatic monitoring system of shortwave radio signal based on redevelopment

In modern radio signal monitoring, due to the complex signal modulation mode and crowded spectrum environment, both steady-state signal and transient signal monitoring need powerful intercepted and recognition technology to identify these signals. In order to solve the above dilemma, a new automatic signal monitoring system is introduced. In the proposed system, with the use of Agilent E3238S Signal Monitoring System receiver´s high resolution ability, broadband search and flexible energy and signal decision method are adopted to intercept radio signals, then the narrow-band receiver will automatically switch to the intercepted signal frequency. Furthermore, with W61PC decoder board to deal with the intermediate frequency signal for further signal recognition, monitoring work can be made automatically. Compared with other current monitoring system, the proposed system has the characteristics of faster identify and higher accuracy.