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OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158)

11-14 Sept. 2000

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  • Oceans 2000 MTS/IEEE Conference & Exhibition

    Publication Year: 2000, Page(s):v - lxxiii
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  • WaveView/sup TM/-computer software for processing, displaying and archiving data from the TRIAXYS/sup TM/ Directional Wave Buoy

    Publication Year: 2000
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (85 KB)

    Summary form only given, substantially as follows:- WaveView/sup TM/ was developed by Axys Environmental Systems to automatically decode the data transmitted from a TRIAXYS/sup TM/ Directional Wave Buoy into ASCII files. This innovative software program processes, displays, and archives data received from the buoy via the TRIAXYS/sup TM/ Digital Receiver. WaveView/sup TM/ runs on an lBM compatible... View full abstract»

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  • New developments at Service Argos

    Publication Year: 2000, Page(s):1879 - 1881 vol.3
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    summary form only. This article very briefly lists the oceanographic equipment and services provided by the company Service Argos Inc. ARGOS is a satellite radiotelemetry system for communication with ocean buoys. View full abstract»

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  • BAYLAB: a manned undersea instrument chamber

    Publication Year: 2000, Page(s):2005 - 2006 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (126 KB)

    Summary form only given, substantially as follows. BAYLAB is a small, easily transportable undersea habitat. It differs from other existing systems by placing habitability for instruments and electronic devices as a higher priority than that of the human occupants. For this reason it is called a manned undersea instrument chamber (MUSIC). It was designed for use in the shallow waters of the Chesap... View full abstract»

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  • Semiautomatic assignment of high resolution wind directions in SAR images

    Publication Year: 2000, Page(s):1775 - 1851 vol.3
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2184 KB)

    Synthetic aperture radar (SAR) imagery has the potential of producing wind fields that are unique with respect to spatial resolution and coverage. The wind speed retrieval is performed by calibrating the SAR image and comparing the resulting normalized radar cross section (NRCS) with the NRCS from an empirical model, e.g. CMOD4. The backscatter model gives the NRCS as a function of image geometry,... View full abstract»

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  • Aluminum in the marine environment: an update

    Publication Year: 2000, Page(s):1591 - 1595 vol.3
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Aluminum is experiencing a resurgence in use in the marine environment. The natural attributes of the metal, i.e. its lightweight, high strength and corrosion resistance, together with the newer class of fast ferries and the growth of the cruising industry have sparked this interest. The advent of friction stir welding is likely to further accelerate this growth View full abstract»

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  • Dispersive surface classification: local analysis of optical image sequences of the water surface to determine hydrographic parameter maps

    Publication Year: 2000, Page(s):1769 - 1774 vol.3
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (796 KB)

    The appearance of the sea surface is a spatio-temporal phenomenon. Features observed on the water surface are, e.g. wave fields or wind streaks. The acquisition and analysis of image sequences therefore allows a complete (spatio-temporal) representation of the sea state. Ship- or land-based nautical radars are used in the field and optical sensors are used in hydraulic wave tanks to acquire image ... View full abstract»

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  • Handbook for datum transformations and coordinate conversions and GEOTRANS software

    Publication Year: 2000, Page(s):1585 - 1589 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    This handbook is intended to provide US Army organizations and agencies with general guidance on selecting the appropriate methods for shifting between local geodetic datums, and the World Geodetic System, and for converting Cartesian and map projection coordinates to and from geodetic coordinates. This guidance is provided to aid in selecting datum shift algorithms, in developing, selecting, and ... View full abstract»

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  • Tidal marsh restoration

    Publication Year: 2000, Page(s):1925 - 1928 vol.3
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    There is a broad interest in restoring degraded tidal rivers and salt marshes. The goal is to increase biological productivity, improve water quality, and provide recreational uses which benefit the system's ecology and the community View full abstract»

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  • Dynamical classification of hydroacoustic data from a Baltic Sea experiment

    Publication Year: 2000, Page(s):1761 - 1767 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    The authors analyze the acoustic signatures of a small boat using nonlinear dynamical signal models. Specifically, they discuss the estimation of the parameters of a nonlinear delay differential equation from this data. Using the model coefficients as detection features they implement a Mahalanobis distance-based decision criteria to perform rigorous hypothesis testing. By analyzing acoustic data ... View full abstract»

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  • The development of a new generation of NOAA Small Craft Navigational Chart

    Publication Year: 2000, Page(s):1581 - 1584 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    Presents a procedure to develop a new generation Small Craft Navigational Chart with input from the boating community, local, regional governments and NGO units. The authors describe how the chart was made, distributed and tested in southwest Florida View full abstract»

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  • Instrumentation to support modeling and simulation for coastal management

    Publication Year: 2000, Page(s):1923 - 1924 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    The Naval Oceanographic Office (NAVOCEANO), located in southern Mississippi, has a strong interest in establishing underwater test areas in the northern Gulf of Mexico to support engineering performance evaluation of its emerging Autonomous Undersea Vehicle (AUV) Program and long-term, in-situ instrumentation for real-time and near-real-time monitoring of the littoral marine environment. To this e... View full abstract»

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  • Ocean surface waves: automated analysis of directional spectra

    Publication Year: 2000, Page(s):1753 - 1759 vol.3
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    As ocean surface directional wave spectra are becoming more routinely available from in-situ and global measurements and predictions, the need for convenient and efficient data reduction, analysis and storage capabilities is now ever more pressing. These capabilities are contained in the Wave Identification and Tracking System (WITS), developed at the Johns Hopkins University Applied Physics Labor... View full abstract»

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  • SAIC chart management system

    Publication Year: 2000, Page(s):1577 - 1579 vol.3
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    Telecommunication companies are competing more frequently each year for seafloor space near popular landing sites. The increased competition has effectively mandated to each marine survey and cable installation company that survey and installation results must be produced at an ever-increasing rate, allowing the new networks to start transmitting light and earning revenue as fast as possible. Data... View full abstract»

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  • Spatio-temporal processing of coherent acoustic communications data in shallow water

    Publication Year: 2000, Page(s):1625 - 1631 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (720 KB)

    Achieving reliable underwater communications in shallow water is a difficult task due to the random time varying nature of multipath propagation. This paper describes a novel coherent space-time processing method for acoustic communications in a marginally overspread channel operating between 16 kHz and 32 kHz. The FAU-MillsCross, a 64-channel high performance acoustic receiver, is our real-time d... View full abstract»

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  • New insights into the radar backscattering from the water surface at different radar frequencies and polarizations in the presence of rain and wind

    Publication Year: 2000, Page(s):2101 - 2105 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    In order to interpret different radar contrasts on images of rain events over the ocean acquired by a multi-frequency/multi-polarization synthetic aperture radar (SAR), laboratory and field measurements have been performed. The aim of this investigation is to develop a method for estimating rain rates of small scale rain events over the ocean using radar backscatter data. The radar backscatter mea... View full abstract»

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  • How to make survey instruments “AUV-friendly”

    Publication Year: 2000, Page(s):1647 - 1652 vol.3
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    The paper will present examples of how the Maridan company has successfully integrated a range of instruments into the MARIDAN-600 AUV, including side scan sonar (Klein and Tritech), sub bottom profiler (SBP) (GeoAcoustics), multi beam echo sounder (Reson) and digital camera (SONY). It also points out the most important characteristics to consider when designing sensors suitable for AUV surveys View full abstract»

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  • Mapping of geoacoustic properties of sediments in shallow water

    Publication Year: 2000, Page(s):1919 - 1922 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    Range dependent geoacoustic properties of shallow water sediments were estimated using tomographic inversion techniques. Non-linear inversion schemes based on global optimization schemes were used. Synthetic data generated for assumed environmental conditions were analyzed using wavelets to obtain the modal arrivals for frequencies in the range 10-180 Hz. Data from a number of sources distributed ... View full abstract»

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  • Eigenstructure based towed array shape estimation using sources in unknown locations

    Publication Year: 2000, Page(s):1895 - 1900 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    The performance of direction-of-arrival (DOA) estimation algorithms depends on the knowledge of the array shape. However, the assumption of a straight line for a towed array is not always satisfied in practice. In this paper, we propose a new array shape estimation method based on one of the eigenvectors spanning the signal subspace. In our approach, we include the array deformation in the initial... View full abstract»

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  • New algorithms for open ocean marine mammal monitoring

    Publication Year: 2000, Page(s):1749 - 1752 vol.3
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    The Naval Undersea Warfare Center has been funded by the Office of Naval Research Environmental Requirements Advanced Technology (ERAT) program to create a multi-disciplinary program to conduct Marine Mammal Monitoring on Navy Undersea Ranges (M3R). The objective is to supplement extensive undersea range and signal processing hardware with state of the art passive marine mammal detectio... View full abstract»

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  • European marine information system: Eumaris prototype

    Publication Year: 2000, Page(s):1569 - 1575 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1344 KB)

    The present paper summarises the activities developed by ETC/MCE, under European Environment Agency (EEA) contract, on the geographic information system. The aim of present paper is to introduce some general concepts about the geographic information systems and to investigate the potential of GIS as tool for the assessment of the European seas. Care has also been taken to explain the main technica... View full abstract»

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  • Shallow-water acoustic communication with high bit rate BPSK signals

    Publication Year: 2000, Page(s):1621 - 1624 vol.3
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    BPSK signals have been defined for transmission through a shallow-water acoustic communication channel. The signals were accompanied by two displaced carriers to facilitate carrier recovery. To correct for the adverse effects of time spreading, a pseudo-random learning sequence was transmitted ahead of the communication signal. The signal processing consists of a shift to baseband guided by the di... View full abstract»

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  • The impact of cosine collector geometry on aquatic spectroradiometer performance

    Publication Year: 2000, Page(s):2001 - 2004 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The design of underwater instruments is often a compromise between instrument optical performance features, ruggedness of design, and communications bandwidth. Further, the increased number of spectral bands reported by newer sensing systems and the wide dynamic range observed in optical signals in situ places special challenges on the design of next generation instrumentation. Error introduced in... View full abstract»

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  • Design of flying eye remotely operated vehicle for deep water surveillance

    Publication Year: 2000, Page(s):2075 - 2099 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2084 KB)

    Offshore petroleum reserves have been discovered in depths approaching 3050 m (10000 ft) in the Gulf of Mexico. Therefore, there is a need for the design of a remotely operated vehicle (ROV) and a launch and recovery system for the vehicle that is capable of working in this water depth. The ROV is an observational vehicle used to observe underwater systems and operations. The design criteria is 30... View full abstract»

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  • Numerical simulation of viscous flows about underwater vehicles

    Publication Year: 2000, Page(s):2185 - 2195 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1228 KB)

    The present study was undertaken to provide information for both design improvement and control system development during various stages of an autonomous underwater vehicle (AUV) development project. The need to establish a predictive capability for the hydrodynamic (control) coefficients for an AUV presented an opportunity to apply a multiblock incompressible Navier-Stokes flow solver which has e... View full abstract»

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