Publications [#66680] of Jeffrey L. Krolik

Papers Published

1. Krolik, J.L. and Book, P. and Kraut, S., Adaptive sonar detection performance when the signal wavefront and noise covariance are uncertain, 2004 IEEE Sensor Array and Multichannel Signal Processing Workshop (IEEE Cat. No.04EX872) (2005), pp. 235 - 8, Barcelona, Spain
   (last updated on 2007/04/16)

   Abstract:
   This paper considers adaptive sonar array detection performance when both the multipath ocean environment and the noise field directionality are uncertain. Recent analytic results for adaptive matched-subspace detector (AMSD) performance with multi-rank signals in Gaussian noise of unknown covariance are applied to the passive sonar problem. In particular, a methodology for comparing analytically predicted detection performance to that achieved using a limited amount of real horizontal acoustic array data collected off San Diego is presented. Detection performance results with real data are shown to be in good agreement with theory provided that sufficient signal-subspace rank is assumed and that the signal does not contaminate the assumed signal-free noise training data. Discrepancies between theory and data are largest when the SNR was high and the number of snapshots available to estimate the noise covariance matrix was low

   Keywords:
   adaptive signal detection;adaptive signal processing;array signal processing;covariance matrices;Gaussian noise;sonar arrays;sonar detection;sonar signal processing;