A Novel Credibility Quantification Method for Welch's Periodogram Analysis Result in Model Validation

Yuchen Zhou, Ke Fang, Kaibin Zhao, Ping Ma
2018 Proceedings of The 9th EUROSIM Congress on Modelling and Simulation, EUROSIM 2016, The 57th SIMS Conference on Simulation and Modelling SIMS 2016   unpublished
Welch's periodogram is widely used in frequency domain model validation. However, Welch's analysis results just reveals whether the time series passed the consistency test in each discrete frequency point, which is not a quantitative credibility evaluation result and may not help the evaluation expert to grade credibility level of simulation system. Based on Welch's periodogram and consistency test approach, a novel credibility quantification method using weight density function is proposed.
more » ... thermore, the frequency analysis and credibility quantification process is provided. Finally, the credibility quantification of radiated noise in ship acoustic feature simulation indicates the method proposed is effective for periodic time series with complicated spectrum.
doi:10.3384/ecp17142783 fatcat:ngxvtquvp5fzzbazhfy5dujjxu