Abstract:

Aiming at the application of communication countermeasures, a novel method is proposed for period estimation of the PN sequence based on the wavelet transform. The wavelet transform (WT) among various scales (≥eightfold chip duration) is utilized to abstract period edge information of the PN sequence. And the WT’s amplitude spectra is accumulated among some scales to implement the the period estimation of the PN sequence through detecting the spectral line interval. Simulation result indicates that this algorithm has a good estimation performance, dose not require large data length and is well reliable and feasible.