An algorithm is considered which enables the power spectrum to be estimated for a discrete sample of N values of the signal in a time interval of [−T/2, +T/2] using a filter which has the narrow spectral band as a rectangular time window, but with a sidelobe level of less than 4.3 dB. Examples of several “power” filters are presented.
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References
J. Bendat and A. Peirsol, Applied Analysis of Random Data [Russian translation], Mir, Moscow (1989).
A. F. Kurchanov and S. G. Tsygankov, Russian Patent No. 2284485, Izobret., Polez. Mod., No. 27 (2006).
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Translated from Izmeritel'naya No. 9, pp. 65–66, September, 2008.
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Kurchanov, A.F. The estimation of the power spectrum of a signal. Meas Tech 51, 1035–1037 (2008). https://doi.org/10.1007/s11018-008-9148-4
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DOI: https://doi.org/10.1007/s11018-008-9148-4