Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Sonar Performance"”.
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Investigating Real-Time Sonar Performance Predictions Using Beowulf Clustering
<p>Predicting sonar performance, critical to using any sonar to its maximum effectiveness, is computationally intensive and typically the results are based on data from the past and may not be applicable to the current water conditions. This paper discusses how Beowulf clustering techniques were …
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Low frequency active sonar performance in the Arctic Beaufort Lens
… commonly for acoustic communications or active sonar. First, this thesis performs a thorough modal analysis of the effect of the double ducted environment on long range propagation of a 300 Hz and 3500 Hz pulse. Signal excess is determined for the two different source pulses to quantify the …
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Low frequency active sonar performance in the Arctic Beaufort Lens
… commonly for acoustic communications or active sonar. First, this thesis performs a thorough modal analysis of the effect of the double ducted environment on long range propagation of a 300 Hz and 3500 Hz pulse. Signal excess is determined for the two different source pulses to quantify the …
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Ocean, platform, and signal processing effects on synthetic aperture sonar performance
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1991.
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Adaptive rapid environmental assessment system simulation framework
… a new concept for minimizing the non model-based sonar performance prediction uncertainty and improving the model-based sonar performance by adaptive and rapid in situ measurement in the ocean environment. In this thesis, a possible structure of the AREA system has been developed; an AREA System …
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Ocean acoustic uncertainty for submarine applications
… uncertainty can then be used to provide enhanced sonar performance predictions for tactical decision aides. High fidelity robust modeling of the oceans can resolve various scale processes from tidal shifts to mesoscale phenomena. These ocean models can be coupled with acoustic models that account …
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Deep learning framework for solving geoacoustic inversion problems using normal mode theory
… is crucial for applications ranging from sonar performance prediction to environmental monitoring. However, traditional inversion methods are often computationally intensive, limiting real-time analysis and large-scale spatial characterization. This thesis presents a deep learning …
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Environmental and Statistical Performance Mapping Model for Underwater Acoustic Detection Systems
… a framework for calculating and communicating performance. This methodology has been applied to undersea target detection systems and has come to be known as Performance Surface modeling. The term Performance Surface refers to a geo-spatial representation of the predicted performance of one or …