2 edition of Design study for a moored surface-scanning sonar found in the catalog.
Design study for a moored surface-scanning sonar
Lee E. Freitag
This report contains the results of a design study for a surface scanning sonar instrument capable of long-term deployment on ocean moorings. The instrument is intended to sample the bubble field just below the ocean"s surface and compute the backscattered intensity and Doppler velocity in small unit volumes. The principal motivation for the development of such an instrument is to enhance the study of upper ocean processes by utilizing the ability of the sonar to detect surface waves and Langmuir circulation. Important design parameters for the instrument are investigated and a detailed design proposed. Key technical issues such as the trade-offs among spatial resolution, temporal resolution, velocity precision, total range, and power are discussed. The azimuthal motion of the instrument on a mooring is considered as a potential problem, and possible solutions are discussed. Matlab functions used for the investigations are included in an appendix.
|Statement||by Lee E. Freitag, Albert J. Plueddemann, and Steve Merriam.|
|Series||WHOI -- 93-23., WHOI (Series) -- 93-23.|
|Contributions||Plueddemann, Albert J., Merriam, Steve.|
|The Physical Object|
|Pagination||41 p. :|
|Number of Pages||41|
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Side-scan sonar (also sometimes called side scan sonar, sidescan sonar, side imaging sonar, side-imaging sonar and bottom classification sonar) is a category of sonar system that is used to efficiently create an image of large areas of the sea floor.
Military application. Commercial application. This study, in relation to the load-bearing heel part of a shoe, highlights the importance of good footbed design. The findings can be used to design footwear with enhanced comfort.
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Two other scanners, based on stereoscopy and a line-swept laser, were also tested. The target application is to examine objects inside. 3D Surface Scanning and Reconstruction Via Structured Light Methods Click: See the World in 3D Abstract Background Methods Results Max Larner¹, Nabjot Sandhu¹, Mark Ortiz¹, Kathleen Chung¹, Chai Lor¹,Changqing Li¹.
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Sonar and light detection and ranging (lidar) technologies allow for the study of salmon aggregation behaviours in the ocean (Gauldie et al., ;Misund, ;Tollefsen and Zedel, ; Churnside. Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF.
Visit to get more information about this book, to buy it in print, or to download it as a free PDF. Near surface-scanning Doppler sonar also has the potential to provide simultaneous measurements of wind direction, wave directional spectra, Langmuir circulation, and mean near-surface flow.
Turbulence measurements are also important for interdisciplinary studies. Only a few specialists have been able to measure ocean turbulence by: Americas BAE Systems won an $ million contract modification, which provides for the procurement of 20 E-2 parachute survival ensemble units and FLU inflators for the Navy, in addition to 60 E-2 parachute survival ensemble units and 70 FLU inflators for the government of Japan.
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Eoin Colfer. Artemis Fowl and the Atlantis Complex (Artemis Fowl — 7) For Ciarán, who will hear many rugby stories. PROLOGUE ARTEMIS FOWL. SO FAR, SO BAD. ARTEMIS was once an Irish boy who longed to know everything there was to know, so he read book after book until his brain swelled with astronomy, calculus, quantum physics, romantic poets, forensic science, and anthropology, among a.
The title Engineering Materials Science concisely describes the contents of this book and reflects its point of view. Long before there was a science to characterize them, man-made engbreering materials were used for structural applications, to ease the drudgery of existence, and to enrich life.
Echo tracker/range finder for radars and sonars. NASA Technical Reports Server (NTRS) Constantinides, N. (Inventor) An echo tracker/range finder or altimeter is des.
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Evaluating a small footprint, waveform-resolving lidar over coastal vegetation communities. USGS Publications Warehouse. Nayegandhl, A.; Brock, J.C.; Wright, C.W.; O. Vertical shear was observed from two separate Doppler sonar systems.
A long-range sonar, with independent estimates every 18 m, sampled from m in depth. A short-range sonar measured fine-scale shear over m depth, with m vertical resolution.
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