Advances in Signal Processing for Maritime Applications

Realistic Subsurface Anomaly Discrimination Using Electromagnetic Induction and an SVM Classifier

The environmental research program of the United States military has set up blind tests for detection and discrimination of unexploded ordnance. One such test consists of measurements taken with the EM-63 sens...

Authors: Juan Pablo Fernández, Fridon Shubitidze, Irma Shamatava, Benjamin E Barrowes and Kevin O'Neill

Automatic Indexing for Content Analysis of Whale Recordings and XML Representation

This paper focuses on the robust indexing of sperm whale hydrophone recordings based on a set of features extracted from a real-time passive underwater acoustic tracking algorithm for multiple whales using fou...

Authors: Frédéric Bénard and Hervé Glotin

Advances in Signal Processing for Maritime Applications

Authors: Frank Ehlers, Warren Fox, Dirk Maiwald, Martin Ulmke and Gary Wood

Underwater Broadband Source Localization Based on Modal Filtering and Features Extraction

Passive source localization is a crucial issue in underwater acoustics. In this paper, we focus on shallow water environment (0 to 400 m) and broadband Ultra-Low Frequency acoustic sources (1 to 100 Hz). In th...

Authors: Maciej Lopatka, Grégoire Le Touzé, Barbara Nicolas, Xavier Cristol, JérômeI Mars and Dominique Fattaccioli

Underwater Image Processing: State of the Art of Restoration and Image Enhancement Methods

The underwater image processing area has received considerable attention within the last decades, showing important achievements. In this paper we review some of the most recent methods that have been specific...

Authors: Raimondo Schettini and Silvia Corchs

Simulation of Matched Field Processing Localization Based on Empirical Mode Decomposition and Karhunen-Loève Expansion in Underwater Waveguide Environment

Mismatch problem has been one of important issues of matched field processing for underwater source detection. Experimental use of MFP has shown that robust range and depth localization is difficult to achieve...

Authors: Qiang Wang and Qin Jiang

CFAR Detection from Noncoherent Radar Echoes Using Bayesian Theory

We propose a new constant false alarm rate (CFAR) detection method from noncoherent radar echoes, considering heterogeneous sea clutter. It applies the Bayesian theory for adaptive estimation of the local clut...

Authors: Hiroyuki Yamaguchi and Wataru Suganuma

Masking of Time-Frequency Patterns in Applications of Passive Underwater Target Detection

Spectrogram analysis of acoustical sounds for underwater target classification is utilized when loud nonstationary interference sources overlap with a signal of interest in time but can be separated in time-fr...

Authors: Jüri Sildam

A Fully Automated Method to Detect and Segment a Manufactured Object in an Underwater Color Image

We propose a fully automated active contours-based method for the detection and the segmentation of a moored manufactured object in an underwater image. Detection of objects in underwater images is difficult d...

Authors: Christian Barat and Ronald Phlypo

Low Complexity Iterative Receiver Design for Shallow Water Acoustic Channels

An adaptive iterative receiver structure for the shallow underwater acoustic channel (UAC) is proposed using a decision feedback equalizer (DFE) and employing bit-interleaved coded modulation with iterative de...

Authors: C. P. Shah, C. C. Tsimenidis, B. S. Sharif and J. A. Neasham

Hausdorff-Based RC and IESIL Combined Positioning Algorithm for Underwater Geomagnetic Navigation

This paper presents a primitive solution with novel scheme and algorithm for Underwater geoMagnetic Navigation (UMN), which now occurs as the hot-point in the research field of navigation. UMN as an independen...

Authors: Yi Lin

Acoustic Particle Detection with the ANTARES Detector

The (Antares Modules for Acoustic Detection Under the Sea) AMADEUS system within the (Astronomy with a Neutrino Telescope and Abyss environmental RESsearch) ANTARES neutrino telescope is designed to investigat...

Authors: C. Richardt, G. Anton, K. Graf, J. Hößl, U. Katz, R. Lahmann and M. Neff

A Relative-Localization Algorithm Using Incomplete Pairwise Distance Measurements for Underwater Applications

The task of localizing underwater assets involves the relative localization of each unit using only pairwise distance measurements, usually obtained from time-of-arrival or time-delay-of-arrival measurements. ...

Authors: Kae Y. Foo and Philip R. Atkins

Artificial Neural Network-Based Clutter Reduction Systems for Ship Size Estimation in Maritime Radars

The existence of clutter in maritime radars deteriorates the estimation of some physical parameters of the objects detected over the sea surface. For that reason, maritime radars should incorporate efficient c...

Authors: R. Vicen-Bueno, R. Carrasco-Álvarez, M. Rosa-Zurera (EURASIP Member), J. C. Nieto-Borge and M. P. Jarabo-Amores

An Underwater Acoustic Implementation of DFT-Spread OFDM

This paper presents a design of DFT-spread OFDM system applied to an underwater acoustic channel. It does not only combine all the advantages of a conventional OFDM system but also reduces the peak-to-average ...

Authors: Yonghuai Zhang, Haixin Sun, En Cheng and Weijie Shen

An Evaluation of Pixel-Based Methods for the Detection of Floating Objects on the Sea Surface

Ship-based automatic detection of small floating objects on an agitated sea surface remains a hard problem. Our main concern is the detection of floating mines, which proved a real threat to shipping in confin...

Authors: Alexander Borghgraef, Olivier Barnich, Fabian Lapierre, Marc Van Droogenbroeck, Wilfried Philips and Marc Acheroy

Techniques for Effective Optical Noise Rejection in Amplitude-Modulated Laser Optical Radars for Underwater Three-Dimensional Imaging

Amplitude-modulated (AM) laser imaging is a promising technology for the production of accurate three-dimensional (3D) images of submerged scenes. The main challenge is that radiation scattered off water gives...

Authors: R. Ricci, M. Francucci, L. De Dominicis, M. Ferri de Collibus, G. Fornetti, M. Guarneri, M. Nuvoli, E. Paglia and L. Bartolini

Silent Localization of Underwater Sensors Using Magnetometers

Sensor localization is a central problem for sensor networks. If the sensor positions are uncertain, the target tracking ability of the sensor network is reduced. Sensor localization in underwater environments...

Authors: Jonas Callmer, Martin Skoglund and Fredrik Gustafsson (EURASIPMember)

Statistical Real-time Model for Performance Prediction of Ship Detection from Microsatellite Electro-Optical Imagers

For locating maritime vessels longer than 45 meters, such vessels are required to set up an Automatic Identification System (AIS) used by vessel traffic services. However, when a boat is shutting down its AIS,...

Authors: FabianD Lapierre, Alexander Borghgraef and Marijke Vandewal