I want to measure the phase lag (time lag) between LDV vibrometer and other equipment such as voltage and current probes with accuracy of 1 degree (~nanoseconds). Unfortunately, the vibrometer has a "response delay" in micro second order, comparing to ns order "response delay" in current and voltage probes. For measuring with nanosecond accuracy I should get rid of sensors response delays.
I am using a Polytech OFV-3001 LVD using velocity decoder (based on doppler effect) for measuring displacement/velocity around 20kHz-50kHz frequencies.
I mean the time delay in control system. in control system this kind of delay can be in the signal transferring and actuator functioning.
Thanks, I changed the question. Can I use matched filters for reduction of phase lag between different output signals?
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