Browse > Article

Parameter Mismatches and its Biases in Ocean Matched Field Processing  

Park Jae-Eun (해군해양전술정보단)
Kim Jea-Soo (한국해양대학교 해양개발공학부)
Shin Kee-Cheol (넥스원퓨처(주) 수중연구소)
Publication Information
The Journal of the Acoustical Society of Korea / v.24, no.2, 2005 , pp. 87-96 More about this Journal
Abstract
In matched field processing (MEP), the observed acoustic field data is basically correlated with the replica produced by the modeling. therefore the results of source localization and correlation is limited by the mismatch of the environment and sensor location. In this paper. the effects of mismatch in environment and system on the bias in estimating the source location are investigated in the context of source localization. In the Pekeris waveguide, the simulation shows that the mismatches in environment and system, can cause a significant biases in the source localization and a degradation in MFP correlation. Mismatch caused by uncertainties in array tilt and depth, bottom depth, bottom sound speed, etc. causes degradation in source localization performance.
Keywords
Matched field processing; Mismatch; Bias; Ambiguity surface; Localization;
Citations & Related Records
연도 인용수 순위
  • Reference
1 AB. Baggeroer. WA Kuperman. and P.N. Mikhalevsky, 'An Overview of Matched Field Methods in Ocean Acoustics,' IEEE J. Ocean. Eng., 18, 401-424, 1993   DOI   ScienceOn
2 C. Feulliade. D.R. Del Balzo, and M.M. Rowe, 'Environmental mis-match in shallow-water matched field processing: Geoacoustic parameter variability,' J. Acoust. Soc. Am., 85, 2354-2364, 1989   DOI
3 E.C. Shang and Y.Y. Wang, 'Environmental mismatching effects on source localization processing in mode space,' J. Acoust. Soc. Am., 89, 2285-2290, 1991   DOI
4 M. Musil, N.R. Chapman, and M.J. Wilmut, 'Range-dependent matched-field inversion of SWeIlEX-96 data using the downhill simplex algorithm,' J. Acoust. Soc. Am., 106, 3270-3281, 1999   DOI   ScienceOn
5 G.L. D'spain and WA Kuperman, 'Application of waveguide invariants to analysis of spectrograms form shallow water environments that vary in range and azimuth,' J. Acoust. Soc. Am., 106, 2454-2468, 1999   DOI   ScienceOn
6 G.L. D'Spain, J.J. Murry, WS. Hodgkiss, N.O. Booth, and P.W Schey. 'Mirages in shallow water matched field processing,' J. Acoust. Soc. Am., 105 (6), 3245-3265, 1999   DOI
7 F.B. Jensen and WA Kuperman, M.B. Porter, and H. Schmidt. Computational Ocean Acoustics, American Institute of Physics, New York, 1994
8 H.P. Bucker, 'Use of calculated sound fields and matched-field detection to locate sound sources in shallow water,' J. Acoust. Soc. Am., 59, 368-373, 1976   DOI   ScienceOn
9 D.F. Gingras, 'Methods for predicting the sensitivity of matched-field processors to mismatch,' J. Acoust. Soc. Am., 86, 1940-1949, 1989   DOI
10 M.B. Porter, The KRAKEN Normal Mode Program, SACLANT Undersea Research Center, 1994
11 D.R. DelBalzo, C. Feuillade, and M.M. Rowe. 'Effects of water-depth mismatch on matched-field localization in shallow water,' J. Acoust. Soc. Am., 83, 2180-2185, 1988   DOI
12 M.B. Porter. R.L. Dicus, and R.G. Fizell, 'Simulations of Matched field processing in a deep-water Pacific environment,' IEEE J. Oceanic Eng., 12, 173-181, 1987   DOI
13 A. Tolstoy, 'Sensitivity of matched field processing to sound-speed profile mismatch for vertical array in a deep water Pacific environment,' J. Acoust. Soc. Am., 85, 2394-2404, 1989   DOI