Seabed Characterization Using Acoustic Communication Signals on an Autonomous Underwater Vehicle With a Thin-Line Towed Array

Chotiros, Nicholas P.; Pallayil, Venugopalan

doi:10.1109/joe.2012.2227546

Cited by 17 publications

(6 citation statements)

References 10 publications

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“…Additionally, acoustic communication has been used to exchange data between an unmanned surface vehicle and an autonomous underwater vehicle [ 15 ]. Another important application is the use of acoustic communication signals in an autonomous underwater vehicle to characterize the seafloor [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Communication System Based on Magnetic Coils for Underwater Vehicles

Canales-Gómez

León-Gónzalez

Jorge-Muñoz

et al. 2022

Sensors

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In this work, a wireless communication system based on magnetic coils for underwater vehicles is presented. Firstly, the mathematical model of magnetic field induction using magnetic coils is discussed. Then, a description of the proposed communication system is presented, including the main components of the transmitter and receiver module. The experimental results show that due to the properties of the magnetic field, the proposed communication system can work properly in different environments such as air or water with the same efficiency. Underwater tests were carried out in different water circumstances: varying the temperature in a range from 10 °C to 35 °C, varying concentrations of clay in a range from 0% to 10% , and varying the salinity concentration in a range from 1000 ppm ( parts per million) to 35,000 ppm. It was observed that these conditions do not affect the information transfer. Finally, the advantages of using the proposed system compared to existing submarine communication systems are discussed.

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Section: Introductionmentioning

confidence: 99%

Communication System Based on Magnetic Coils for Underwater Vehicles

Canales-Gómez

León-Gónzalez

Jorge-Muñoz

et al. 2022

Sensors

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“…As autonomous underwater devices such as autonomous underwater vehicles (AUVs) have matured, AUV-based submarine bathymetric topography and seafloor sub-bottom profiling have become a current research focus as well as a future developmental trend 25 – 27 . AUVs can be operated at any depth in the range of their operating water depth and are less susceptible to harsh sea surface weather and marine environments in the working process.…”

Section: Introductionmentioning

confidence: 99%

Inversion of the physical properties of seafloor surface sediments based on AUV sub-bottom profile data in the northern slope of the South China Sea

Zhou

Huang³

et al. 2021

Sci Rep

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Based on the seafloor reflection coefficient obtained from autonomous underwater vehicle (AUV) sub-bottom profile survey data of the northern slope of the South China Sea, combined with the sample test data of seafloor surface sediments, we use the Biot–Stoll model to establish the equations relating the seafloor reflection coefficient to the porosity, density, and mean grain size of the sediments at the dominant frequency of 5 kHz (the dominant frequency of the AUV sub-bottom profiler). The physical property parameters such as the porosity, density, and mean grain size of seafloor surface sediments are further inverted. Comparison of inversion results with measured results shows that the overall deviation ratios of the inverted mean grain size, porosity, and density of the surface sediments are in the ranges of − 13.56 to 14.44%, − 6.15 to 8.06%, and − 10.85 to 0.46%, respectively. Among them, the mean grain size directly reflects the size of seafloor sediment particles, and the particles are finer in deeper water. Overall, the inversion results are basically consistent with the measured values and thus can well reflect the variation characteristics of the physical properties of seafloor surface sediments.

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“…20 AUV-based inversions recently have been gaining research interest due to their operational attractiveness. [21][22][23][24] The theory of waveguide Doppler and modal propagation is reviewed briefly in Sec. II, followed by the formulation of the inversion problem.…”

Section: Introductionmentioning

confidence: 99%

Recursive Bayesian synthetic aperture geoacoustic inversion in the presence of motion dynamics

Tan

Gerstoft

Yardim

et al. 2014

The Journal of the Acoustical Society of America

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A low signal to noise ratio (SNR), single source/receiver, broadband, frequency-coherent matched-field inversion procedure recently has been proposed. It exploits coherently repeated transmissions to improve estimation of the geoacoustic parameters. The long observation time improves the SNR and creates a synthetic aperture due to relative source-receiver motion. To model constant velocity source/receiver horizontal motion, waveguide Doppler theory for normal modes is necessary. However, the inversion performance degrades when source/receiver acceleration exists. Furthermore processing a train of pulses all at once does not take advantage of the natural incremental acquisition of data along with the ability to assess the temporal evolution of parameter uncertainty. Here a recursive Bayesian estimation approach is developed that coherently processes the data pulse by pulse and incrementally updates estimates of parameter uncertainty. It also approximates source/receiver acceleration by assuming piecewise constant but linearly changing source/receiver velocities. When the source/receiver acceleration exists, it is shown that modeling acceleration can reduce further the parameter estimation biases and uncertainties. The method is demonstrated in simulation and in the analysis of low SNR, 100-900 Hz linear frequency modulated (LFM) pulses from the Shallow Water 2006 experiment.

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Seabed Characterization Using Acoustic Communication Signals on an Autonomous Underwater Vehicle With a Thin-Line Towed Array

Cited by 17 publications

References 10 publications

Communication System Based on Magnetic Coils for Underwater Vehicles

Communication System Based on Magnetic Coils for Underwater Vehicles

Inversion of the physical properties of seafloor surface sediments based on AUV sub-bottom profile data in the northern slope of the South China Sea

Recursive Bayesian synthetic aperture geoacoustic inversion in the presence of motion dynamics

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