Comparative Study of Exponential Signal by an Interpolated DFT Algorithm
نویسندگان
چکیده
In this paper, exponential signals in the frequency domain are accurately analyzed by an algorithm, and the peaks of the discrete Fourier transform (DFT) result are adopted to obtain parameters that include amplitudes, frequencies, damping, and phases. There are two steps for this algorithm: interpolated DFT and leakage elimination. Interpolated DFT refers to the three neighboring spectral lines at the peak of each mode used to calculate an approximate result, with the purpose of leakage elimination being to eliminate the influence of leakage on these data. After some iteration, this algorithm will obtain accurate parameters using Interpolated DFT algorithm. Also comparison with different algorithms and Theoretical values of the parameters are also obtained here. Keywords-dft,idft,damping,leakage
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