Abstract
In order to evaluate the use of different propagation models in matched-field processing (MFP) applications, source localization was attempted using data from the Santa Barbara Channel Experiment and replicas generated by the adiabatic normal mode model KRAKEN, the beam model BELLHOP, and the parabolic equation model RAM. A conventional matched-field processor using all these models successfully located the source position in range and depth at both short (1 km) and intermediate (7 km) range, with marginal results at the longest 15 km range. Because signal-gain degradation varies with the model used, simulations were performed to quantify the degradation and relate that amount to a model mismatch, i.e., an error in array element localization.
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