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Achievements in Acoustic Camera Performance Estimation and Signal Analysis

This postdoc research presents achievements in the performance estimation of a SmartLab Acoustic Camera, including enhancements in angular resolution, signal detection, and vibration estimation. The postdoc has published in conferences, participated in scientific meetings, and concluded agreements.

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Achievements in Acoustic Camera Performance Estimation and Signal Analysis

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  1. BAS Institute of Information and Communication Technologies Postdoc Achievements in AComIn Volodymyr Kudriashov E-mail: KudriashovVladimir@gmail.com 1

  2. Outline • Performance estimation of SmartLab Acoustic Camera. • Obtained results on: a) angular resolution enhancement; b) detection of signals; c) vibration estimation using microwave radiometer. Outcomes: • Publications in conference proceedings, journals and book chapter • Participation at scientific meetings • Concluded agreements 2

  3. Acoustic Camera Applications: Acoustic Imagingand Signal Analysis 3 Pictures from WWW

  4. Acoustic Camera Architecture 4 The Camera Manufacturer: Brüel & Kjær (Sound and Vibration Measurement A/S)

  5. Acoustic Camera Phase Calibration Channel 2 Number of switching 5

  6. Field of View Illustration Boresight direction; FoV  88 deg.  Christensen  Christensen Elevation ~3 times in Elevation Azimuth ~2.6 times in Azimuth B&K reports/reviews: about ±30o 6

  7. Ghost imagessample Boresight direction; Threshold -15 dB; FoV  88 deg. 3 dB !! 3 dB !! 7

  8. Detection Beamforming delivers imaging. Target presence decision - is to be adopted by user. Signal model Increments properties No signal probability density function Probability density function Likelihood ratio Ghosts or Info? 8

  9. Resolution Enhancement Trg. 2 Trg. 1 Half power or -3dB 9

  10. Resolution Enhancement B&K Capon mod. Center frequency 10 kHz

  11. Beamforming based-on modified Capon algorithm Delay and Sum Capon mod. Center frequency 5 kHz 11

  12. 3D Acoustic Imaging 3D view Top view Side view Front view 12

  13. Radiometric Solution Slide 1/2 Features: -Nice (desired) and constant angular resolution for all frequencies -Vibration sound/map -Temperature map -Price does not exceed 13

  14. Radiometric Solution Slide 2/2 Capon-based signal processing for bistatic radiometer which estimates time difference of arrival (TDOA). Regular approach Modified Maximum Likelihood Method Emitter 1 Emitter 2 14

  15. Outcome 1 6 publications in proceedings of conferences Published: • K.A. Lukin, V.V. Kudriashov, P.L. Vyplavin and V.P. Palamarchuk, Coherent Radiometric Imaging In Range-Azimuth Plane Using Antennas With Beam Synthesizing, 11th European Radar Conference (EuRAD), pp. 45-48. Fiera di Roma, Rome, Italy, 5-10 October, 2014. DOI: 10.1109/EuRAD.2014.6991203. • K.A. Lukin, Vyplavin P.L., Palamarchuk V.P., Kudriashov V.V., Kulpa K., Gajo Z., Misiurewicz J., Kulpa J., Accuracy of phase measurements in noise radar, 15th International Radar Symposium (IRS), pp. 1-4. Gdansk, Poland, 16-18 June, 2014. DOI: 10.1109/IRS.2014.6869186. • Lukin K., Vyplavin P., Kudriashov V., Lukin S. , Palamarchuk V. , Shkvarko Yu., Sushenko P, Zaets N., Radar tomography using MIMO noise radar and antenna with beam synthesis, IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2014, pp. 798-800. Florence, Italy, 4-9 May, 2014. DOI: 10.1109/ICASSP.2014.6853706. In printing: • V.V. Kudriashov, K.M. Alexiev, “Non-stationary random Wiener signal detection rule for case of monostatic reception, Acoustics 2014, pp. 1-3. Sofia, Bulgaria, 28-29 November, 2014. ISSN 1312-4897, year XVI, number 16. • V.V. Kudriashov, K.M. Alexiev, “Acoustic camera – how to see the sounds, Acoustics 2014, pp. 1-4. Sofia, Bulgaria, 28-29 November, 2014. ISSN 1312-4897, year XVI, number 16. In review: • V.V. Kudriashov, Non-stationary Random Wiener Signal Detection Criterion Variants for Case of Monostatic Reception, 7th Balkan Conference in Informatics, pp. 1-8. Craiova, Romania, 2-4 September, 2015. 15

  16. Outcome 2 4 publications in journals Published: • K.A. Lukin, V.V. Kudriashov, P.L. Vyplavin, V.P. Palamarchuk, “Coherent imaging in the range-azimuth plane using a bistatic radiometer based on antennas with beam synthesizing,” IEEE Aerospace and Electronic Systems Magazine, Vol. 29, Iss. 7, July 2014. (Thomson Reuters IF: 0.438) In printing: • K.A. Lukin, V.V. Kudriashov, P.L. Vyplavin, V.P. Palamarchuk, S.K. Lukin, Coherent Radiometric Imaging in Range-Azimuth Plane Using Antennas With Beam Synthesizing, International Journal of Microwave and Wireless Technologies. (Thomson Reuters IF: 0.456) • K.A. Lukin, P.L. Vyplavin, V.P. Palamarchuk, V.V. Kudriashov, K. Kulpa, Z. Gajo, J. Misiurewicz, J. Kulpa, “Accuracy of Phase Measurements in Noise Waveform Synthetic Aperture Radar,” IEEE Transactions on Aerospace and Electronic Systems. (Impact Factor 1.394) In review: • V.V. Kudriashov, “A Modified Maximum Likelihood Method for Estimation of Mutual Delay and Power of Noise Signals by Bistatic Radiometer,” Comptes rendus de l'Académie bulgare des Sciences. (SCOPUS IPP: 0.214) 16

  17. Outcome 3 Publication in Springerbook In review: • V.V. Kudriashov, Experimental evaluation of opportunity to improve the resolution of the acoustic maps. Book: ”New Approaches in Intelligent Control and Image Analysis: Techniques, Methodologies and Applications” To a book series “Intelligent Systems Reference Library”, Publisher: SPRINGER-VERLAG, Editors: Kazumi Nakamatsu (University of Hyogo), Roumen Kountchev (Technical University of Sofia). 17

  18. Outcome 4 3 presentations at seminars • V.V. Kudriashov, Acoustic camera – how to see the sounds. IICT BAS, seminar of Mathematical Methods for Sensor Information Processing Department, 27 November, 2014. • Laboratory of vibration and noise in machines, Technical University of Sofia. 20 November, 2014. • Departments of a) Air Transport b) of Combustion Engines, Automobile Engineering and Transport, c) of Strength of Materials, Faculty of Transport, TU Sofia. 21 January, 2015. 18

  19. Outcome 5 3 preliminary agreements on the use of the equipment • TU Sofia. Vice rector, Prof., Eng., Ph.D., Ivan Kralov. Noise reduction of railway transport. Acoustic mapping for noise source localization. Condition diagnosis of passing railway carriages. • TU Sofia. Faculty of Transport. Acoustic diagnostics of internal combustion engines at helicopter repair factory. • Dundee Precious Metals. Gold/Copper Underground Mine in Chelopech, Bulgaria. Life of mine – to 2025. Gold Production ~ 4 t, in 2013. Noise source localization in acoustic shielding of the mine air conditioning. 19

  20. Outcome 6 3 agreements of understanding • Laboratory for Nonlinear Dynamics of Electronic Systems, O.Ya. Usikov Institute for Radiophysics and Electronics, National Academy of Sciences of Ukraine. Prof. K. Lukin. • Research and Development Center of Integrated Informational Radio Electronic Systems and Technologies, Kharkiv National University of Radio Electronics, Ministry of Education and Science of Ukraine. Prof. D. Lekhovytskiy. • Department of Aircrafts Radio Electronic Systems Design, Faculty of Aircrafts Radio Engineering Systems, National Aerospace University “KhAI”, Ministry of Education and Science of Ukraine. Doc. V. Pavlikov. 20

  21. Outcome 7 Searching for cooperation • European Doctoral Programmes in Metamaterials, Virtual Institute “Metamorphose”. EUPROMETA – 27th Doctoral School on Metamaterials, Electromagnetic, acoustic, and thermal invisibility. Department of Engineering, “Roma Tre” University, Roma, Italy, 4-8 May, 2015. Target issue: “Acoustic cloaking: theoretical aspects, experiments, and applications”. • Brüel & Kjær (Sound and Vibration Measurement A/S) course “Acoustic Imaging and Noise Source Identification”. Copenhagen, Denmark, 28-29 April, 2014. Target issues: a) to clarify existing particularities of workflow with AComIn Smart Lab acoustic camera equipment; b) to discuss potential cooperation with the company. 21

  22. Outcomes. Quantity of works in 2014-2015 is 11. It includes: • quantity of conf. proceedings papers: 6 (incl. EuRAD, IRS, ICASSP); • quantity of papers: 4 (Scopus IPP: 0.214; IF: 0.438 … 1.394); • one chapter in Springer book. All the works are peer-reviewed. Quantity of works those cited AComIn is 6. It consists of: • 3 conference papers; • 2 journal papers (IPP: 0.214; IF: 0.456); • Springer book chapter. V. Kudriashov had been employed in AComIn since 12 August, 2014. 22

  23. Conclusions • AComIn SmartLab Acoustic Camera performance was estimated. Obtained characteristics enable to improve its usage. • Resolution enhancement algorithm was checked in indoor experiments. Obtained results show opportunity to generate acoustic images with higher quality. • Detection algorithms were proposed to decrease human factor during acoustic noise source localization. • Non-acoustic technique was proposed to improve quality of acoustic noise source identification. • Applicability of the camera was considered. 23

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