M-FSK intra-pulse modulation analysis by Subspectral Decomposition Method

The intra-pulse modulation analysis of a detected signal is a major task of an intelligent receiver, in various civilian and military applications. To determine a signal source signature (e.g. radar or jammer) with M-ary Frequency Shift Keying intra-pulse modulation (M-FSK intra-pulse modulation) in the recent hardware implementation of electronic intelligence system receivers is difficult to achieve. The system for recognition of unknown M-FSK intra-pulse modulated signals by new approach in signal analysis is proposed and described. In proposed system, the signal analysis is performed on the basis of Subspectral Decomposition Method (SDM). The SDM principle and results of simulation of M-FSK intra-pulse modulation signal recognition and decomposition are presented.