Parameter Estimation of Wide-Band FM Signals From Knowledge About Their Sinusoidal Modulation

被引：0

作者：

Goldstein, Allen ^{[1
]}

Kyriazis, Gregory A. ^{[1
]}

机构：

[1] Inst Nacl Metrol Qualidade & Tecnol INMETRO, BR-25250020 Duque De Caxias, Brazil

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2023年 / 72卷

关键词：

Bayes methods; calibration; frequency modulation; parameter estimation; rate of change of frequency (ROCOF); ALGORITHMS;

D O I：

10.1109/TIM.2023.3292946

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Estimation of the parameters of frequency-modulated (FM) signals presents a significant challenge when the peak frequency deviation is large in comparison with the modulation frequency. In the frequency domain, such signals contain many significant side bands and so are considered to be wide-band FM signals. Standards are being developed for the testing of frequency and rate of change of frequency (ROCOF) measuring instruments used in electrical power transmission and distribution systems. To verify the measuring and operating ranges of these instruments under dynamic conditions, injection of wide-band FM signals with carrier frequency equal to the power system nominal frequency (50 or 60 Hz) is being envisaged. A refinement is proposed here to one method of FM signal parameter estimation in the time domain which uses prior knowledge about the modulation frequency. This refinement overcomes convergence difficulties when the FM signal is wide band by finding an improved initial estimate for the modulation phase.

引用

页数：8

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