Identification of carrier frequency for pulsed signals

Details Identification of carrier frequency for pulsed signals Identification of carrier frequency for pulsed signals

1987-04-27

1988-08-02

Levy, Stewart J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 77B, G01R 2302

Patent

active

047616040

ABSTRACT:
A method for determining the carrier frequency of a pulsed signal based upon nominal parameters for the pulsed signal input by an operator selects an algorithm based upon a duty factor calculated from the nominal parameters. For large duty factors a conventional maximum peak detection algorithm is used to identify a spectral line having the greatest amplitude as the carrier frequency. For smaller duty factors the first nulls on each side of the main lobe of the frequency spectrum for the pulsed signal are determined and used to calculate a carrier frequency. The spectral line having the maximum peak value within a window about the calculated carrier frequency is identified as the carrier frequency.

REFERENCES:
patent: 3665512 (1972-05-01), Hall et al.
patent: 3723870 (1973-03-01), Donahue
patent: 4438392 (1984-03-01), Morwing
patent: 4611165 (1986-09-01), Nussbaum

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