Estimating the carrier frequency of a single sideband signal

A method for estimating the carrier frequency Fc of a single sideband signal (SSB) comprises sampling, with an A/D converter 2, a received SSB signal and dividing it into time blocks (a), (b), (c), Figure 3, each of which has a fundamental frequency P (P1, P2, P3) appertaining thereto; determining,...

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Bibliographische Detailangaben
Hauptverfasser:	KENNETH DAVID KING, JAMES BUCHAN STRACHAN CAIRNS
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	A method for estimating the carrier frequency Fc of a single sideband signal (SSB) comprises sampling, with an A/D converter 2, a received SSB signal and dividing it into time blocks (a), (b), (c), Figure 3, each of which has a fundamental frequency P (P1, P2, P3) appertaining thereto; determining, for the time blocks, the fundamental frequency P with a pitch extractor 4, and the frequency of a spectral energy peak H (H1, H2, H3) occurring at a harmonic of the fundamental frequency P with a harmonic extractor 3; and determining possible values of the carrier frequency F according to the relation F = H +/- nP. The estimated carrier frequency Fc is the most frequently determined possible value of the carrier frequency F.