Effects of environmental degradation on higher‐order correlation detectors for deterministic signals

Autor: Lisa A. Pflug, Juliette W. Ioup, Robert L. Field, James H. Leclere, Kenneth H. Barnes, George E. Ioup
Rok vydání: 1990
Předmět:
Zdroj: The Journal of the Acoustical Society of America. 87:S155-S155
ISSN: 0001-4966
DOI: 10.1121/1.2028053
Popis: Higher‐order correlation detectors are investigated using essentially band‐limited deterministic finite energy signals. These signals have been propagated through a simulated range‐dependent ocean environment using a time domain parabolic equation model. The detectors are analyzed using receiver operating characteristic (ROC) curves. Correlation coefficients [R. L. Field, J. H. Leclere, and E. J. Yoerger, submitted to J. Underwater Acoust.] and limiting signal‐to‐noise ratios for which the detectors exhibit good performance are given. Previously reported results for undegraded signals [J. Acoust. Soc. Am. Suppl. 1 86, S118 (1989)] are extended to include rectification [W. B. Moseley (private communication)] as part of the bicorrelation detection scheme. The bicorrelation detector not only benefits from rectification, but rectification permits its use in cases where it might otherwise be inapplicable. [Work supported by the Naval Oceanic and Atmospheric Research Laboratory through the U. S. Navy‐ASEE Summe...
Databáze: OpenAIRE