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Based on the nonlinear dynamics theory, the feature of the sinusoidal signal, the active homing echo signal and the active homing echo signal after filtering and normalizing is presented detailedly in this paper. Through the analysis of the phase trajectory, the phase trajectory slope and the slope spectrum's changing rule of a certain number of measured active homing echo signal sample data, it can be seen that the phase trajectory motion characteristic, the slope and the slope spectrum's changing rule have certain separability.

Nonlinear Dynamics Feature of Active Homing Echo Signal