Remocean System for the Detection of the Reflected Waves from the Costa Concordia Ship Wreck

Ludeno, Giovanni; Brandini, Carlo; Lugni, Claudio; Arturi, Daniele; Natale, Antonio; Soldovieri, Francesco; Gozzini, Bernardo

doi:10.1109/jstars.2014.2321048

Cited by 31 publications

(44 citation statements)

References 14 publications

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“…2018, 10, x FOR PEER REVIEW 3 of 16 [7][8][9][10]. The core of the reconstruction strategy is the Normalized Scalar Product (NSP) approach [18] able to estimate the surface current and bathymetry jointly.…”

Section: Methodsmentioning

confidence: 99%

“…In [7,8], the authors proposed the "Local Method", which improved the original version of the NSP method [18], with the aim to reconstruct spatially inhomogeneous current and sea surface current fields. Such a method relies on the spatial partitioning of the investigated region into partially overlapping patches, within which the local estimation of the surface current is performed [21].…”

Section: Methodsmentioning

confidence: 99%

“…In recent decades, X-band marine radar has been also employed as a remote sensing tool for sea state monitoring, not only on ships [1][2][3][4][5][6] but also in coastal areas [7][8][9][10][11][12][13]. The wavelength of X-band radar signal is approximatively equal to the wavelength of ripples present on the sea surface when a wind speed higher than 3 m/s is present.…”

Section: Introductionmentioning

confidence: 99%

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Proof of Feasibility of the Sea State Monitoring from Data Collected in Medium Pulse Mode by a X-Band Wave Radar System

et al. 2018

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X-band marine radars can be exploited to estimate the sea state parameters and surface current. However, to pursue this aim, they are set in such a way as to radiate a very short pulse to exploit the maximum spatial resolution. However, this condition strongly limits the use of radar as an anti-collision system during navigation. Consequently, a continuous change of radar scale is needed to perform both the operations of waves and current estimations and target tracking activities. The goal of this manuscript is to investigate the possibility of using marine radar working in a medium pulse mode to estimate the sea state parameters and surface current, while assuring suitable anti-collision performance. Specifically, we compare the capabilities of the X-band radar for sea state monitoring when it works in short and medium pulse modes and we present the results of a comparison based on data collected during two experimental campaigns. The provided results show that there is good agreement about the estimation of wave parameters and the surface current field that make us hopeful that, in principle, it is possible to use the medium pulse mode to achieve information about sea state with a reasonable degradation.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Proof of Feasibility of the Sea State Monitoring from Data Collected in Medium Pulse Mode by a X-Band Wave Radar System

et al. 2018

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“…The derivation of the MTF required external information, for instance obtained from in situ measurement. A processing system, called Remocean, also used MTF to estimate the sea surface elevation in coastal areas; see (Ludeno et al 2014(Ludeno et al , 2015Punzo et al 2016). An empirical method without using any external calibration was introduced in Dankert and Rosenthal (2004).…”

Section: Introductionmentioning

confidence: 99%

High waves in Draupner seas—Part 2: Observation and prediction from synthetic radar images

Groesen

Wijaya²

2017

J. Ocean Eng. Mar. Energy

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In Part 1, Van Groesen et al. (J Ocean Eng Mar Energy, 2017), a numerical study of extreme waves in socalled Draupner seas showed that extreme crest heights of 18 m, one-and-a-half times the significant wave height, occur in a time span of 20 min on average in every area less than 1 km 2 . Such extreme, steep waves are dangerous for ships and offshore structures. In this Part 2, we demonstrate that using synthetic images of an X-band radar such high waves can be predicted around 60 s before their actual appearance. It will be shown that a recent dynamic average and evolution scenario (DAES) that has demonstrated to lead to good reconstruction of the sea from distorted shadowed radar images of synthetic seas with moderate wave heights can also be applied to the high seas using nonlinear evolution codes. Taking at one instant a reconstructed sea state to calculate the nonlinear sea in future times leads to a qualitatively good prediction that can warn ships of freak waves before their appearance.

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“…The method under the so-called Remocean processing system was tested on real radar data obtained from field experiments in Giglio Island port, Italy [Ludeno et al, 2014] and in Salerno Harbour, Italy [Ludeno et al, 2015]. A systematic error in the result was found which was supposedly from the assumption of the linear wave theory in the method leading to an overestimation of the water depth, particularly in shallow water.…”

Section: Radar For Coastal Applicationmentioning

confidence: 99%

Reconstruction and deterministic prediction of ocean waves from synthetic radar images

Wijaya¹

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Remocean System for the Detection of the Reflected Waves from the Costa Concordia Ship Wreck

Cited by 31 publications

References 14 publications

Proof of Feasibility of the Sea State Monitoring from Data Collected in Medium Pulse Mode by a X-Band Wave Radar System

Proof of Feasibility of the Sea State Monitoring from Data Collected in Medium Pulse Mode by a X-Band Wave Radar System

High waves in Draupner seas—Part 2: Observation and prediction from synthetic radar images

Reconstruction and deterministic prediction of ocean waves from synthetic radar images

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