Filtering calculation method of the sensor array induction phase angle independent of the demodulation phase offset of the phase generated carrier

摘要

Sensor array employs a parameter to induce a time-varying phase angle of the optical signal that contains the phase generated carrier with a demodulation phase offset. The output signal from the sensor array is filtered, I to produce a filtered signal. The use of the filtered signal, the phase angle is calculated independently of the demodulation phase offset.