The cyclostationary characteristic analysis of the time-frequency overlapped signal in single-channel

Abstract

the characteristic analysis of the time-frequency overlapped signal (TFOS) in single-channel is a powerful challenge in electronic countermeasures. So, in this paper, the time-frequency overlapped degrees (Pt, Pf) of signals are proposed to measure the level overlapped of in time domain and frequency domain. Afterwards, based on cyclostationary principle, the proposition about the cyclostationary characteristic of TFOS is proved. Moreover, the cyclic spectrum of TFOS is deduced. Theoretical analysis and experimental results show that the linear sum of multicyclostationary signals is still cyclostationary signal. © 2011 Published by Elsevier Ltd.