Application of lifting wavelet packet decomposing algorithm based on optimal basis in blasting vibration signal analysis

Lifting wavelet packet decomposing algorithm based on optimal basis was applied in de-noising blast vibration signals and analysis of energy distribution in order to ensure the accuracy and efficiency of an engineering blasting network monitoring and forecasting system. Based on lifting wavelet packet multi-scale transformation, an improved search algorithm for optimal basis was used, it met the needs of online processing of complicated signals. In application examples, noise was filtered with the lifting wavelet packet decomposing algorithm, and the energy distribution of every frequency band was acquired precisely. The application of the proposed algorithm in analysing blasting vibration signals provided a study basis and technical supports for study and control of blasting vibration hazards.