Abstract
Matched-field methods find source location by matching the measured signal field with the modeled signal field. The resulted ambiguity output is often characterized by a multimodal structure. At high signal-to-noise ratio (SNR), the peak at the true source position is a global maximum and can be located accurately; below some threshold SNR, the true peak is easily obscured by other ambiguous peaks, leading to a significantly increased localization error. To analyze this threshold performance behavior, a quantitative approach for error analysis has previously been developed in the context of the maximum likelihood estimate (MLE) with spatially-white noise. In this paper, the same approach is generalized to work for spatially-correlated noise field introduced by discrete interferences and/or surface distribution sources.
Original language | English (US) |
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Pages (from-to) | 922-927 |
Number of pages | 6 |
Journal | Oceans Conference Record (IEEE) |
Volume | 2 |
State | Published - 2003 |
Externally published | Yes |
Event | Celabrating the Past... Teaming Toward the Future - San Diego, CA., United States Duration: Sep 22 2003 → Sep 26 2003 |
ASJC Scopus subject areas
- Ocean Engineering
- Oceanography