Abstract
The paper introduces a novel method to detect the initial time of a weak sinusoidal signal embedded in non-stationary noise and studies the performance of the method through numerical simulations. Furthermore, a proposed nonlinear function combined with time–frequency analysis can be used to effectively improve the signal-to-noise (SNR). Simulation results show that the method can rapidly detect the initial time of the weak analytical signal with a SNR lower than −54 dB and a time-domain resolution of only 1 second.
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Chen, X., Yang, X., Xiong, H. et al. A Novel Method to Detect Initial Time of Weak Sinusoidal Signal Embedded in Non-stationary Noise. Circuits Syst Signal Process 30, 413–420 (2011). https://doi.org/10.1007/s00034-010-9230-4
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DOI: https://doi.org/10.1007/s00034-010-9230-4