Browsing Reprints by Subject "Side scan sonar"

Now showing items 1-10 of 10

    • A comparative analysis of side-looking sonars for rapid classification of underwater intruders 

      Pastore, Thomas J.; Kessel, Ronald T. (NURC, 2008/09)
      One aspect of NURC's 2008 efforts in port protection involves building a prototype system for countering a subsurface threat. Such a capability against underwater intruders in ports requires surveillance of the underwater ...

    • A PC/Linux software toolkit for coastal swath mapping 

      Tyce, Robert C.; Dzurenko, Stephen M.; Cohen, Paul A.; Caress, David W. (NATO. SACLANTCEN, 1997)
      Assembly of a PC/Linux based data acquisirion and processing software toolkit for coastal (shallow water) multibeam and sidescan swath mapping sonar systems has been undertaken by the URI Ocean Mapping Development center ...

    • Advances in cots side scan sonar for MCM applications 

      Kozak, Garry (NATO. SACLANTCEN, 1997)
      The Persian Gulf War has elevated the awareness to the problems of shallow water mine detection. Today's high technology shallow water anti-invasion mines, such as the Italian made "MANTA" and the Swedish manufactured ...

    • AUV-enabled adaptive underwater surveying for optimal data collection 

      Williams, David P. (NURC, 2012/04)
      A new adaptive strategy for performing data collection with a sonar-equipped autonomous underwater vehicle (AUV) is proposed. The approach is general in the sense that it is applicable to a wide range of underwater tasks ...

    • Bayesian inference and sidescan restoration 

      Calder, B. R.; Linnett, L. M. (NATO. SACLANTCEN, 1997)
      We consider a Bayesian approach to the problem of inferring parameters of the SONAR environment given only the gathered sidescan image. A simplified model of the process is developed along with suitable distributions on ...

    • Bottom/subbottom surveying using a new, parametric, sidescan sonar 

      Wood, Warren T.; Gettrust, Joseph F.; Sen, Mrinal K.; Kosalas, James G. (NATO. SACLANTCEN, 1997)
      The Naval Research Laboratory (NRL) has developed a dual-frequency, towed, interferometric, sidescan sonar system known as the Subbottom Swath System, which is capable of detecting objects and structures buried below the ...

    • Efficient dense sonar surveys with an autonomous underwater vehicle 

      Williams, David P.; Couillard, Michel (CMRE, 2014/01)
      An algorithm for the in situ adaptation of the survey route of an autonomous underwater vehicle (AUV) equipped with side-looking sonars was recently proposed. This algorithm immediately exploits the through-the-sensor data ...

    • Texture analysis of sidescan sonar imagery using statistical scattering models 

      Griffiths, Hugh; Dunlop, Jonathan; Voles, Roger (NATO. SACLANTCEN, 1997)
      It is shown that the generalised K-distribution provides a good fir to the amplrtude statisttcs of sonar imagery from several different types of seabed sediment. A number of possible explanations for the Ricean nature of ...

    • Underwater optical and acoustic imaging: a time for fusion? a brief overview of the state-of-the-art 

      Ferreira, Fausto; Machado, Diogo; Ferri, Gabriele; Dugelay, Samantha; Potter, John Robert (CMRE, 2019/06)
      Underwater optical imaging has several drawbacks inherent to the physical medium such as light attenuation and turbidity. Sonars try to obviate those issues although, typically, they have lower resolutions. Combining visual ...

    • Wavelet analysis of side scan sonar imagery for classification 

      Impagliazzo, John; Greene, Walter; Huynh, Quyen (NATO. SACLANTCEN, 1997)
      Wavelet-based techniques are presented for compressing side scan sonar images communicated from UUV's through band limited communication channels. Testing with an automatrc classifier on reconstructed images demonstrates ...