Papers Published

1. Tabrikian, Joseph and Krolik, Jeffrey L., Barankin bounds for source localization in an uncertain ocean environment, IEEE Transactions on Signal Processing, vol. 47 no. 11 (1999), pp. 2917 - 2927 [78.796428] .
   (last updated on 2007/04/16)

   Abstract:
   Ambiguity surfaces for underwater acoustic matched-field processing are prone to having high secondary peaks. This leads to anomalous source localization estimates below a threshold signal-to-noise ratio (SNR) at which the performance rapidly departs from that predicted by the Cramer-Rao lower bound (CRLB). In this paper, Barankin bounds are used to predict the threshold SNR under two different models including known or uncertain shallow-water environments and monochromatic or random narrowband sources. Evaluation of the Barankin bound suggests that although asymptotic localization performance degrades with increasing environmental uncertainty, the threshold SNR is relatively unaffected.

   Keywords:
   Acoustic signal processing;Signal to noise ratio;Underwater acoustics;