A Novel Phase Extraction for the Detection of Time Parameters in Signal

Lee, Eun-bang

Journal of Navigation and Port Research 2005;29(4):341-347.
Published online June 30, 2005.

A Novel Phase Extraction for the Detection of Time Parameters in Signal

Abstract

A unique technique to extract the phase in time domain is proposed in order to measure the time parameters such as speed and depth by transmitting sound and electric waves. In the signal analysis processing, the phase of pulse signal can be transformed and digitalized with local data in real time without the effect of direct current bias and Nyquist limits. This method is sensitive to base frequency of pulse signal with high spacial resolution and is effective to compare two signals which have different forms. It is expected that the phase analysis technique will be applied to the measurement of the speed and depth accurately by ultrasonic pulse signal in water.

Key Words: Phase extraction;Ultrasonic pulse signal;Signal analysis;Time domain;Time parameter