Fig. 1. An illustrative diagram of a detection scenario in reverberant environments.
Fig. 2. A block diagram of the proposed target detection system.
Fig. 3. Multichannel Nonnegative matrix factorization model for the beamspace-domain data.
Fig. 4. Selected frequency basis in the SRR conditions of (a) -4 dB, (b) -6 dB, (c) -8 dB, and (d) -10 dB. The vertical dashed line denotes the normalized Doppler frequency of the target echo.
Fig. 5. Selected time basis in the SRR conditions of (a) -4 dB, (b) -6 dB, (c) -8 dB, and (d) -10 dB. The vertical dashed lines denote the start and the end frames of the target echo.
Fig. 6. Beam gains of the selected source in the SRR conditions of (a) -4 dB, (b) -6 dB, (c) -8 dB, and (d) -10 dB. The vertical dashed line denotes the index of the beamformer whose desired angle is identical to the target bearing.
Fig. 7. F-measures of the estimation results of the frequency, time, and bearing.
Fig. 8. (a) The frequency basis, (b) the time basis, and (c) the beam gains of the selected basis and source by hand in the SRR condition of -10 dB.
참고문헌
- T. Collins and P. Atkins, "Doppler-sensitive active sonar pulse designs for reverberation processing," IEE Proc. of Radar, Sonar, and Navigation 145, 347-353 (1998).
- H. Cox and L. Hung, "Geometric comb waveforms for reverberation suppression," 28th Asilomar Conference on Signals, Systems and Computers 2, 1185-1189 (1994).
- J. M. Alsup, "Comb waveforms for sonar," 33rd Asilomar Conference on Signals, Systems and Computers 2, 864-869 (1999).
- Y. Doisy, L. Deuraz, S. P. van Ijsselmuide, S. P. Beerens, and R. Been, "Reverberation suppression using wideband Doppler-sensitive pulses," IEEE J. Ocean. Eng. 33, 419-433 (2008). https://doi.org/10.1109/JOE.2008.2002582
- S. Kay and J. Salisbury, "Improved active sonar detection using autoregressive prewhiteners," J. Acoust. Soc. Am. 87, 1603-1611 (1990). https://doi.org/10.1121/1.399408
- G. Ginolhac and G. Jourdain, "Principal component inverse algorithm for detection in the presence of reverberation," IEEE J. Ocean. Eng. 27, 310-321 (2002). https://doi.org/10.1109/JOE.2002.1002486
- W. Lei, Q. Zhang, X. Ma, and C. Hou, "Active sonar detection in reverberation via signal subspace extraction algorithm," EURASIP J. Wireless Communications and Networking 2010, 1-10 (2010).
- S. Lee, J. S. Lim, and M. Cheong, "Reverberation suppression algorithm for continuous-wave active sonar system based on overlapping nonnegative matrix factorization" (in Korean), J. Acoust. Soc. Kr. 36, 273-278 (2017).
- A. Ozerov and C. Fevotte, "Multichannel nonnegative matrix factorization in convolutive mixtures for audio source separation," IEEE/ACM Trans. Audio, Speech, Language Process. 18, 550-563 (2010). https://doi.org/10.1109/TASL.2009.2031510
- S. Lee, S. H. Park, and K.-M. Sung, "Beamspace-domain multichannel nonnegative matrix factorization for audio source separation," IEEE Signal Process. Lett. 19, 43-46 (2012). https://doi.org/10.1109/LSP.2011.2173192
- W. S. Burdic, Underwater Acoustic System Analysis (Prentice-Hall, NJ, 1991), Chap. 12.
- D. A. Abraham and A. P. Lyons, "Simulation of non-rayleigh reverberation and clutter," IEEE J. Ocean. Eng. 29, 347-362 (2004). https://doi.org/10.1109/JOE.2004.828202