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Sonar Measurements in Ship Wakes Simultaneous With TerraSAR-X Overpasses

Soloviev, Alexander and Gilman, Mikhail and Young, Kathryn and Brusch, Stephan and Lehner, Susanne (2009) Sonar Measurements in Ship Wakes Simultaneous With TerraSAR-X Overpasses. IEEE Transactions on Geoscience and Remote Sensing, 48 (2), pp. 841-851. DOI: 10.1109/TGRS.2009.2032053. ISSN 0196-2892.

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Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5325638&tag=1


Abstract�A pilot experiment was conducted in the period from April to June 2008 in the Straits of Florida near Port Everglades, Florida, in order to study the dynamics of far wakes of ships. In this experiment, a small boat with downward-looking sonar made �snakelike� sections through wakes of ships of opportunity during the TerraSAR-X overpasses. The ship and its parameters (length, speed, course, etc.) were identified utilizing an automated identification system. The sonar responded to the clouds of microbubbles generated in the ship wake by the propulsion system and ship-hull turbulence. The ship wakes were traced in the sonar signal typically from 10 to 30 min after the ship�s passage. A preliminary analysis of the measurements suggests that the visibility of the centerline ship wake in synthetic aperture radar (SAR) images is correlated with the presence of microbubbles in the wake. This supports the hypothesis that natural surfactants scavenged and brought to the surface by rising bubbles play an important role in the wake visibility in SAR. The influence of the wind-wave field on the ship wake, as well as the effect of screening of the wind-wave field by the ship�s hull, adds another level of complexity to wake patterns observed in SAR images.

Document Type:Article
Title:Sonar Measurements in Ship Wakes Simultaneous With TerraSAR-X Overpasses
AuthorsInstitution or Email of Authors
Soloviev, Alexandersoloviev@nova.edu
Gilman, Mikhailgilman@nova.edu
Young, Kathrynykathryn@nova.edu
Brusch, Stephanstephan.brusch@dlr.de
Lehner, Susannesusanne.lehner@dlr.de
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 841-851
Keywords:Geophysical measurements, remote sensing, sonar imaging, synthetic aperture radar (SAR).
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Geowissenschaftl. Fernerkundungs- und GIS-Verfahren (old)
Location: Berlin-Adlershof , Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Marine Remote Sensing
Deposited By: Xiao Ming Li
Deposited On:29 Oct 2010 10:04
Last Modified:12 Dec 2013 21:04

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