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Low frequency radio wave has efficient long-range propagation in the so-called earth-ionosphere waveguide and it is widely used in communication and navigation. However, low frequency radio wave is suffered from intensive atmospheric noise. In order to extract signal of interest from atmospheric noise, adaptive soft limiter is used to suppress the impulsiveness of the atmospheric noise. And then the...
The corrosion and corrosion resistance current of the submarine modulated by the propeller rotation will produce extremely low frequency (ELF) electromagnetic field in the seawater, which can be used as the attack feature for underwater weapons. However, ELF noise is highly process-sensitive, rendering it as a non-stationary signal, and, hence, traditional Fourier analysis method is not adequate....
A method for the analysis of simultaneous switching noise (SSN) on power distributions networks is developed. To alleviate the ill-conditioned matrix problem in constructing the macromodels of power distribution networks, the modified Gram-Schmidt orthogonal method is used to implement the matrix decomposition in QR form. Meanwhile a simple equivalent circuit model is presented for transient simulations,...
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