A method of phase space reconstruction parameters selection of underwater targets radiated noises

Reconstructing phase space via time series of one dimension is an important subject in nonli-near theory.Based on the autocorrelation function and mutual information methods,the phase space rec-onstruction delay parameters of three types of underwater targets radiated noises are calculated and determined.In the embedding dimension calculating process,the Theiler Window value-W is estimated by time-space separate curve.Thus the spatial nearest neighbors,resulted from the temporal neighborhood,can be estimated and eliminated.The calculation method of embedding dimension based on False Nearest Neighbors method is improved and the results indicat that the method can be used to obtain the em-bedding dimension reasonably and efficiently.