New adaptive frequency estimation methods using variable sampling processing

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This paper proposes two adaptive frequency estimation methods using the variable sampling processing. Signal processing by controlling the sampling rate may introduce new possibilities for signal processing. One of them is a synchronous addition and subtraction method and other is a notch filter method. The processing of the proposed methods is the adaptation of time t in signal x:(t), but the conventional methods are the adaptation of amplitude of x:(t). Two methods are compared each other and with the conventional one in terms of the estimation accuracy, the convergence speed and the computation complexity. It is clear that the proposed methods have some better points than the conventional one.

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