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A detection method of short-time double-Duffing chaotic oscillator array with variable amplitude coefficients (VASTD-Duffing) is proposed for the problem of Duffing chaotic oscillator system's miss detection generated by envelope fluctuation and distribution information in the time domain of the signals. A short-time characteristic window approach and periodic extension method to envelope fluctuation...
The propagation of broadband acoustic signals in a shallow water waveguide has dispersion characteristics, and the received signal is in a form of the sum of several different normal modes. All the normal modes can be separated respectively by a warping transformation. The arrival time delays of two arbitrary normal modes can also be obtained by cross-correlation processing. The dispersion characteristics...
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