title: Improvement of spatial resolution of optical coherence tomography by means of chromatic dispersion compensation
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Ð£Ð»ÑÑÑÐµÐ½Ð¸Ðµ ÑÐ°Ð·ÑÐµÑÐ°ÑÑÐµÐ¹ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÐºÐ¾Ð³ÐµÑÐµÐ½ÑÐ½Ð¾Ð¹ ÑÐ¾Ð¼Ð¾Ð³ÑÐ°ÑÐ¸Ð¸ Ð¿ÑÐ¸ Ð¿Ð¾Ð¼Ð¾ÑÐ¸ ÐºÐ¾Ð¼Ð¿ÐµÐ½ÑÐ°ÑÐ¸Ð¸ Ñ ÑÐ¾Ð¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð´Ð¸ÑÐ¿ÐµÑÑÐ¸Ð¸
Creators: name: Ð¡ÑÐ¹ Ð¦Ð·Ð¸Ð½ÑÑÐ°Ð½Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÐÐ¾Ð»Ð¾ÐºÐ¾Ð½Ð½Ð°Ñ Ð¾Ð¿ÑÐ¸ÐºÐ°
spatial resolution
MUSIC algorithm

description: Optical coherence tomography technology, as a non-invasive, non-contact, high-resolution, and real-time feature, has become one of the most commonly used optical imaging technologies in the fields of medicine and science today. Improving the spatial resolution of OCT signals helps to better diagnose diseases and detect internal structural information of samples. It is effective to improve the spatial resolution of OCT signals through dispersion compensation. By combining fractional Fourier transform and multi signal classification algorithm, both can compensate for dispersion of OCT signals. By combining the two, the spatial resolution of OCT signals can be further improved. When designing the experiment, the algorithm was first written using existing experimental data to confirm that FRFT is more effective than traditional FFT in compensating for dispersion of OCT signals. Then, the MUSIC algorithm was improved. Then, a silicon wafer sandwiched with polyethylene sheets was used as the experimental sample to set up an experimental environment and collect OCT experimental data. Through the processing and comparative analysis of experimental data, the successful combination of FRFT and MUSIC algorithms and their effectiveness in improving the spatial resolution of OCT signals were obtained. In terms of experimental data processing, Matlab software was used to write FRFT code and MUSIC code, and the data was plotted and compared for observation. Finally, conclusions were drawn. The combination of FRFT and MUSIC algorithms can effectively improve the spatial resolution of OCT signals through dispersion compensation. Through precise experimental environments and data analysis based on Matlab, researchers can see clearer and higher spatial resolution OCT signals.
description: Ð¢ÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ñ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÐºÐ¾Ð³ÐµÑÐµÐ½ÑÐ½Ð¾Ð¹ ÑÐ¾Ð¼Ð¾Ð³ÑÐ°ÑÐ¸Ð¸, ÐºÐ°Ðº Ð½ÐµÐ¸Ð½Ð²Ð°Ð·Ð¸Ð²Ð½Ð°Ñ, Ð±ÐµÑÐºÐ¾Ð½ÑÐ°ÐºÑÐ½Ð°Ñ, Ð²ÑÑÐ¾ÐºÐ¾ÑÐ°Ð·ÑÐµÑÐ°ÑÑÐ°Ñ Ð¸ ÑÐ°Ð±Ð¾ÑÐ°ÑÑÐ°Ñ Ð² ÑÐµÐ¶Ð¸Ð¼Ðµ ÑÐµÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð²ÑÐµÐ¼ÐµÐ½Ð¸ ÑÑÐ½ÐºÑÐ¸Ñ, ÑÑÐ°Ð»Ð° Ð¾Ð´Ð½Ð¾Ð¹ Ð¸Ð· Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ ÑÐ°ÑÑÐ¾ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÐ¼ÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð²Ð¸Ð·ÑÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð² Ð¾Ð±Ð»Ð°ÑÑÐ¸ Ð¼ÐµÐ´Ð¸ÑÐ¸Ð½Ñ Ð¸ Ð½Ð°ÑÐºÐ¸ ÑÐµÐ³Ð¾Ð´Ð½Ñ. Ð£Ð»ÑÑÑÐµÐ½Ð¸Ðµ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ°Ð·ÑÐµÑÐµÐ½Ð¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² ÐÐÐ¢ Ð¿Ð¾Ð¼Ð¾Ð³Ð°ÐµÑ Ð»ÑÑÑÐµ Ð´Ð¸Ð°Ð³Ð½Ð¾ÑÑÐ¸ÑÐ¾Ð²Ð°ÑÑ Ð·Ð°Ð±Ð¾Ð»ÐµÐ²Ð°Ð½Ð¸Ñ Ð¸ Ð¾Ð±Ð½Ð°ÑÑÐ¶Ð¸Ð²Ð°ÑÑ Ð²Ð½ÑÑÑÐµÐ½Ð½ÑÑ ÑÑÑÑÐºÑÑÑÐ½ÑÑ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ñ Ð¾Ð±ÑÐ°Ð·ÑÐ¾Ð². Ð­ÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ ÑÐ»ÑÑÑÐ¸ÑÑ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾Ðµ ÑÐ°Ð·ÑÐµÑÐµÐ½Ð¸Ðµ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² ÐÐÐ¢ Ð·Ð° ÑÑÐµÑ ÐºÐ¾Ð¼Ð¿ÐµÐ½ÑÐ°ÑÐ¸Ð¸ Ð´Ð¸ÑÐ¿ÐµÑÑÐ¸Ð¸. ÐÐ±ÑÐµÐ´Ð¸Ð½Ð¸Ð² Ð´ÑÐ¾Ð±Ð½Ð¾Ðµ Ð¿ÑÐµÐ¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¤ÑÑÑÐµ Ð¸ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ¸Ð³Ð½Ð°Ð»ÑÐ½Ð¾Ð¹ ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸, Ð¾Ð±Ð° Ð¼Ð¾Ð³ÑÑ ÐºÐ¾Ð¼Ð¿ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°ÑÑ Ð´Ð¸ÑÐ¿ÐµÑÑÐ¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² ÐÐÐ¢. ÐÐ±ÑÐµÐ´Ð¸Ð½Ð¸Ð² Ð¸Ñ, Ð¼Ð¾Ð¶Ð½Ð¾ Ð´Ð¾Ð¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»ÑÐ½Ð¾ ÑÐ»ÑÑÑÐ¸ÑÑ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾Ðµ ÑÐ°Ð·ÑÐµÑÐµÐ½Ð¸Ðµ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² ÐÐÐ¢. ÐÑÐ¸ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ° Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ Ð±ÑÐ» ÑÐ½Ð°ÑÐ°Ð»Ð° Ð½Ð°Ð¿Ð¸ÑÐ°Ð½ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ Ð´Ð°Ð½Ð½ÑÑ, ÑÑÐ¾Ð±Ñ Ð¿Ð¾Ð´ÑÐ²ÐµÑÐ´Ð¸ÑÑ, ÑÑÐ¾ FRFT Ð±Ð¾Ð»ÐµÐµ ÑÑÑÐµÐºÑÐ¸Ð²ÐµÐ½, ÑÐµÐ¼ ÑÑÐ°Ð´Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ FFT, Ð² ÐºÐ¾Ð¼Ð¿ÐµÐ½ÑÐ°ÑÐ¸Ð¸ Ð´Ð¸ÑÐ¿ÐµÑÑÐ¸Ð¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² ÐÐÐ¢. ÐÐ°ÑÐµÐ¼ Ð±ÑÐ» ÑÐ»ÑÑÑÐµÐ½ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ MUSIC. ÐÐ°ÑÐµÐ¼ Ð² ÐºÐ°ÑÐµÑÑÐ²Ðµ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¾Ð±ÑÐ°Ð·ÑÐ° Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð»Ð°ÑÑ ÐºÑÐµÐ¼Ð½Ð¸ÐµÐ²Ð°Ñ Ð¿Ð»Ð°ÑÑÐ¸Ð½Ð°, Ð·Ð°Ð¶Ð°ÑÐ°Ñ Ð¿Ð¾Ð»Ð¸ÑÑÐ¸Ð»ÐµÐ½Ð¾Ð²ÑÐ¼Ð¸ Ð»Ð¸ÑÑÐ°Ð¼Ð¸, Ð´Ð»Ñ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð¾Ð¹ ÑÑÐµÐ´Ñ Ð¸ ÑÐ±Ð¾ÑÐ° ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ Ð´Ð°Ð½Ð½ÑÑ ÐÐÐ¢. ÐÐ»Ð°Ð³Ð¾Ð´Ð°ÑÑ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¸ ÑÑÐ°Ð²Ð½Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð¼Ñ Ð°Ð½Ð°Ð»Ð¸Ð·Ñ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ Ð´Ð°Ð½Ð½ÑÑ Ð±ÑÐ»Ð¾ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¾ ÑÑÐ¿ÐµÑÐ½Ð¾Ðµ ÑÐ¾ÑÐµÑÐ°Ð½Ð¸Ðµ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² FRFT Ð¸ MUSIC Ð¸ Ð¸Ñ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ Ð² ÑÐ»ÑÑÑÐµÐ½Ð¸Ð¸ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ°Ð·ÑÐµÑÐµÐ½Ð¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² OCT. Ð§ÑÐ¾ ÐºÐ°ÑÐ°ÐµÑÑÑ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ Ð´Ð°Ð½Ð½ÑÑ, Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ðµ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ðµ Matlab Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð»Ð¾ÑÑ Ð´Ð»Ñ Ð½Ð°Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ ÐºÐ¾Ð´Ð° FRFT Ð¸ ÐºÐ¾Ð´Ð° MUSIC, Ð° Ð´Ð°Ð½Ð½ÑÐµ Ð±ÑÐ»Ð¸ Ð½Ð°Ð½ÐµÑÐµÐ½Ñ Ð½Ð° Ð³ÑÐ°ÑÐ¸Ðº Ð¸ ÑÑÐ°Ð²Ð½ÐµÐ½Ñ Ð´Ð»Ñ Ð½Ð°Ð±Ð»ÑÐ´ÐµÐ½Ð¸Ñ. ÐÐ°ÐºÐ¾Ð½ÐµÑ, Ð±ÑÐ»Ð¸ ÑÐ´ÐµÐ»Ð°Ð½Ñ Ð²ÑÐ²Ð¾Ð´Ñ. Ð¡Ð¾ÑÐµÑÐ°Ð½Ð¸Ðµ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² FRFT Ð¸ MUSIC Ð¼Ð¾Ð¶ÐµÑ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ ÑÐ»ÑÑÑÐ¸ÑÑ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾Ðµ ÑÐ°Ð·ÑÐµÑÐµÐ½Ð¸Ðµ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² OCT Ð·Ð° ÑÑÐµÑ ÐºÐ¾Ð¼Ð¿ÐµÐ½ÑÐ°ÑÐ¸Ð¸ Ð´Ð¸ÑÐ¿ÐµÑÑÐ¸Ð¸. ÐÐ»Ð°Ð³Ð¾Ð´Ð°ÑÑ ÑÐ¾ÑÐ½ÑÐ¼ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÐ¼ ÑÑÐµÐ´Ð°Ð¼ Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð·Ñ Ð´Ð°Ð½Ð½ÑÑ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Matlab Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°ÑÐµÐ»Ð¸ Ð¼Ð¾Ð³ÑÑ Ð²Ð¸Ð´ÐµÑÑ Ð±Ð¾Ð»ÐµÐµ ÑÐµÑÐºÐ¸Ðµ Ð¸ Ð±Ð¾Ð»ÐµÐµ Ð²ÑÑÐ¾ÐºÐ¸Ðµ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½ÑÐµ ÑÐ°Ð·ÑÐµÑÐµÐ½Ð¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² OCT.