Phase measurement in measuring device

Details Phase measurement in measuring device Phase measurement in measuring device

2006-09-19

2006-09-19

Assouad, Patrick J. (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C702S045000, C073S861354, C073S861000, C073S861351

Reexamination Certificate

active

07110899

ABSTRACT:
Methods and apparatus for determining the phase of a signal in a measurement device having a digital signal processor are described. The signal is digitised and the digitised signal, or a signal derived therefrom, is numerically correlated with a numerically generated reference signal. In one embodiment, the reference signal has a predetermined phase. In a further embodiment, the numerically generated reference signal has a reference phase and the phase is determined from the result of the correlation. The techniques described herein may reduce the amount of information lost in determining the signal phase.

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