Title :
Dynamic behavior of a digital phase estimator
Author :
Bertocco, M. ; Offelli, C. ; Petri, D.
Author_Institution :
Dipartimento di Elettronica e Inf., Padua Univ., Italy
Abstract :
A frequency-domain estimator for the phase of a sinewave with respect to an arbitrary time reference is presented. The behavior of the estimate is analyzed when the unknown phase is a time-varying function. No information on the signal frequency is required, and highly accurate results are provided even when the signal is distorted by other spectral components (harmonics or spurious tones). The effect on the estimate of an instantaneous phase with a step, linear or sinusoidal time behavior is reported, and the influence of small phase fluctuations and of spurious signal disturbances is taken into account
Keywords :
digital instrumentation; parameter estimation; phase measurement; signal processing equipment; arbitrary time reference; digital phase estimator; digital signal processor; dynamic behaviour; frequency-domain estimator; harmonics; phase fluctuations; sinewave; spurious signal disturbances; step variation; time-varying function; Bandwidth; Frequency domain analysis; Frequency estimation; Frequency measurement; Harmonic distortion; Phase estimation; Phase measurement; Pulse measurements; Sampling methods; Time measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1992. IMTC '92., 9th IEEE
Conference_Location :
Metropolitan, NY
Print_ISBN :
0-7803-0640-6
DOI :
10.1109/IMTC.1992.245168
