title: Frequency-scanning interferometry for dynamic absolute distance measurement using Kalman filter.
abstract: We propose a frequency-scanning interferometry using the Kalman filtering technique for dynamic absolute distance measurement. Frequency-scanning interferometry only uses a single tunable laser driven by a triangle waveform signal for forward and backward optical frequency scanning. The absolute distance and moving speed of a target can be estimated by the present input measurement of frequency-scanning interferometry and the previously calculated state based on the Kalman filter algorithm. This method not only compensates for movement errors in conventional frequency-scanning interferometry, but also achieves high-precision and low-complexity dynamic measurements. Experimental results of dynamic measurements under static state, vibration and one-dimensional movement are presented.
authors.forename: Long
authors.initials: L
authors.lastname: Tao
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Liu
authors.forename: Weibo
authors.initials: W
authors.lastname: Zhang
authors.forename: Yangli
authors.initials: Y
authors.lastname: Zhou