Temporal variability of seafloor roughness and its impact on coherent change detection

Anthony P. Lyons, Daniel Brown

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

In this paper we review past work and present new analysis of seafloor temporal variability and how this variability impacts synthetic aperture sonar coherent change detection. The new work presented here links the decorrelation of complex images taken at different times with the decorrelation of seafloor roughness spectral estimates using a model based on first-order perturbation theory. Results are assessed through a comparison of decorrelation values generated by processing seafloor roughness data recorded by a digital photogrammetry system and complex SAS image data acquired with a translating source/receiver rail assembly. These data sets were collected off the western coast of Florida as part of the US Office of Naval Research-sponsored Sediment Acoustics Experiment 2004 (SAX04). In both the past work and new analysis, decorrelation was found to be frequency dependent with decorrelation times of hours to days setting a limit on reasonable time-frames for successful repeat-pass CCD.

Original languageEnglish (US)
Title of host publicationInternational Conference on Synthetic Aperture Sonar and Synthetic Aperture Radar 2010, Proceedings of the Institute of Acoustics
Pages7-12
Number of pages6
EditionPART 4
StatePublished - Dec 1 2010
EventInternational Conference on Synthetic Aperture Sonar and Synthetic Aperture Radar 2010 - Lerici, Italy
Duration: Sep 13 2010Sep 14 2010

Publication series

NameProceedings of the Institute of Acoustics
NumberPART 4
Volume32
ISSN (Print)1478-6095

Conference

ConferenceInternational Conference on Synthetic Aperture Sonar and Synthetic Aperture Radar 2010
CountryItaly
CityLerici
Period9/13/109/14/10

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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  • Cite this

    Lyons, A. P., & Brown, D. (2010). Temporal variability of seafloor roughness and its impact on coherent change detection. In International Conference on Synthetic Aperture Sonar and Synthetic Aperture Radar 2010, Proceedings of the Institute of Acoustics (PART 4 ed., pp. 7-12). (Proceedings of the Institute of Acoustics; Vol. 32, No. PART 4).