Research on Joint Estimation of Self-mixing Interferometry Parameters and Displacement Reconstruction Based on Local Normalization

Kim Jin Hyok, student at Faculty of Physics presented a paper “Joint Estimation of Self-mixing Interferometry Parameters and Displacement Reconstruction Based on Local Normalization” to SCI Journal “Applied Optics”.

During the research he found out that normalization methods used in processing self-mixing signals proved to be irrational in practical application because of the limitation in coverage and measurement accuracy due to the changes in some information of signals.

Therefore, he proposed a local normalization that enables high-speed accurate measurement of major constants of sensors by reducing the number of sample points, and a simple algorithm with which displacement information of the object can be accurately determined on the basis of it.