Subject description - BE2M17OPM

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BE2M17OPM Optical Measurements
Roles:PV Extent of teaching:2P+2L
Department:13117 Language of teaching:EN
Guarantors:Zvánovec S. Completion:Z,ZK
Lecturers:Komanec M., Vítek S., Zvánovec S. Credits:6
Tutors:Šístek J., Vítek S. Semester:L

Web page:

https://moodle.fel.cvut.cz/courses/BE2M17OPM

Anotation:

Content:

The main aim of this course is to introduce students to optical measurement techniques starting from the detection of microparticles, irregularities, and surface damage, through the use of fiber optics in areas where usage of standard electronic sensors is not possible as in places with increased risk of explosion and hospitals, moving onto lidars for use in intelligent transport infrastructures and finishing with macroscopic sensing (remote sensing) of the Earth, atmosphere, and space. These measurement techniques require, in particular, a deep understanding of the physical mechanisms on which they are based, as well as knowledge of measurement procedures and specifics in data processing and data reconstruction.

Course outlines:

The lectures, in general, range from localized measurements (liquid, medicine, and aviation sensors via optical fibers and planar structures), through monitoring of the technical conditions of structures (structural health monitoring - bridges, pipelines, and buildings) to macroscopic remote measurements focusing on the atmosphere.
1. Introduction to optics, an overview of sensors
2. Description of optical sensor systems, comparison of signal generation and detection methods, interferometric approaches
3. Detection of liquids/gases - use of the principles of refractometry, spectroscopy, and polarization of light
4. Optical sensors for medical purposes and for aviation (gyroscopes)
5. Monitoring of the technical condition of surfaces and structures (structural health monitoring) - use of Fiber Bragg gratings, FBGs
6. Monitoring of the technical condition of structures - distributed fiber reflectometric sensors (OTDR) - coherent, polarization, Raman and Brillouin based reflectometers
7. Optical scanners - passive, properties of scanning systems (CMOS, CCD, APD, EMCCD), noise sources
8. Optical scanners - active, 3D reconstruction
9. Optical inspection of objects, defectoscopy
10. Lidars - concept, parameters, detection accuracy, applications in automotive applications
11. Atmospheric layers, transmission of optical waves through a layered medium
12. Remote sensing of the Earth - spectral properties of the surface, profile and position measurements, combination of radiometrological data, hyperspectral scanning
13. Remote sensing of the Earth - rectification, and reconstruction of the metrological image
14. Remote sensing

Exercises outline:

The seminars will combine theoretical background, where students will learn the basic optical mechanisms of propagation and especially signal processing, together with 2 blocks of practical measurements.
1. Recapitulation of necessary knowledge of optics and wave theory, electron optics
2. BeamPROP simulation software - optical wave guiding, single-mode fiber, wavelength-selective components
3. Measurements of 3-4. weeks - Detection of liquids by refractometry, sensors based on modified optical fibers
4. Measurements of 3-4. of the week - Fiber-optic gyroscope, detection of angular acceleration, data evaluation
5. Measurements of 5-6. of the week – strain sensing using optical fiber Bragg gratings - measurement of strain and temperature in the spectral region
6. Measurements of 5-6. weeks - length measurement with an interferometer - Michelson interferometer - incoherent variant / coherent variant
7. Seminar exercises - methods of data processing from 2D image, thresholding, histograms, statistics
8. Seminar - real data processing from optical scanner / lidar
9. Measurements of 9-11th week - Camera calibration - spectral sensitivity, dark current dependence, etc.
10. Measurements of 9-11th week - Spectra radiometer
11. Measurements of 9-11th week - 3D reconstruction
12. Seminar - processing of real measured signals (astronomical data, satellite measurements of Prague)
13. Seminars - classification and interpretation of satellite data
14. Check of semestral work

Literature:

- R. Hui, M. O'Sullivan, Fiber Optic Measurement Techniques, Academic Press, 2009. - N. Baghdadi, Z. Mehrezi, Optical Remote Sensing of Land Surface: Techniques and Methods. Elsevier, 2016. - D. Pinliang, Q. Chen, LiDAR remote sensing and applications. CRC Press, 2017.

Requirements:

Subject is included into these academic programs:

Program Branch Role Recommended semester
MEEK3_2018 Photonics PV 2


Page updated 29.5.2024 12:51:22, semester: Z/2024-5, Z,L/2023-4, Send comments about the content to the Administrators of the Academic Programs Proposal and Realization: I. Halaška (K336), J. Novák (K336)