A Fast Sine-Wave Fit Algorithm
نویسنده
چکیده
Abstract: In testing digital waveform recorders, an important part is to fit a sinusoidal model to recorded data, and calculate the parameters that result in the best fit. Methods are already standardized; however, they demand high computational power. In this article a new, quick and accurate sinefitting algorithm will be shown based on Levenberg-Marquardt (LM) method. The constraints of convergence will be discussed and an additional algorithm will be shown that is able to fulfil the necessary constraints and correctly initialize the iterative part even in the case of noisy and unknown sinusoid inputs.
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