Author: George Chia-Jen ChenPublisher:
ISBN:
Category : Ocean sounds
Languages : en
Pages : 876
Book Description
VLF Source Localization with a Freely Drifting Acoustic Sensor Array
Author: George Chia-Jen ChenPublisher:
ISBN:
Category : Ocean sounds
Languages : en
Pages : 876
Book Description
VLF Source Localization with a Freely Drifting Sensor Array
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 156
Book Description
Source localization and tracking capability of the freely drifting Swallow float volumetric array is demonstrated with matched-field processing (MFP) technique using data collected during the 1989 Swallow float experiment conducted in the Northwest Pacific, Marine Physical Laboratory's set of nine freely drifting, infrasonic sensors, capable of recording ocean ambient noise in the 1- to 25-Hz range, was deployed to span the water column of 4100-m depth, with horizontal aperture on the order of 5 km. Even though the floats were drifting, their positions were determined with the 8-kHz internal navigation system and a postprocessing least-squares-based localization procedure.
VLF Source Localization with a Freely Drifting Acoustic Sensor Array
Author: George Chia-Jen ChenPublisher:
ISBN:
Category :
Languages : en
Pages : 368
Book Description
Localizing and Beamforming Freely-drifting VLF Acoustic Sensors
Author: Richard Lee CulverPublisher:
ISBN:
Category : Underwater acoustics
Languages : en
Pages : 362
Book Description
Self contained, freely-drifting Swallow floats capable of recording ambient ocean noise in the 1 to 25 Hz band have been designed, built and deployed by the Marine Physical Laboratory, Scripps Institution of Oceanography, University of California, San Diego, California. The buoys are ballasted to neutral buoyancy at midwater depth where they record the components of particle velocity from which sound pressure levels may be derived. Float positions are estimated using an 8 kHz acoustic ranging system and a Kalman tracking filter. Individual float times series are then combined to obtain passive, directional acoustic measurements from 1 to 25 Hz which are not contaminated by flow noise or tether strumming. The float localization and beamforming techniques are illustrated using measurements from a September 1986 Swallow float experiments conducted approximately 50 miles west of San Diego, california. A distant target of opportunity (apparently a surface ship) provides six spectral lines between 9 and 22,5 Hz which are tracked for about 90 minutes. The complex bathymetry of the experiment site complicates signal propagation, but the signal level in the beam-former output indicates that the element time series are being properly combined. (RH).
Global Optimization in Action
Author: János D. PintérPublisher: Springer Science & Business Media
ISBN: 1475725027
Category : Mathematics
Languages : en
Pages : 481
Book Description
In science, engineering and economics, decision problems are frequently modelled by optimizing the value of a (primary) objective function under stated feasibility constraints. In many cases of practical relevance, the optimization problem structure does not warrant the global optimality of local solutions; hence, it is natural to search for the globally best solution(s). Global Optimization in Action provides a comprehensive discussion of adaptive partition strategies to solve global optimization problems under very general structural requirements. A unified approach to numerous known algorithms makes possible straightforward generalizations and extensions, leading to efficient computer-based implementations. A considerable part of the book is devoted to applications, including some generic problems from numerical analysis, and several case studies in environmental systems analysis and management. The book is essentially self-contained and is based on the author's research, in cooperation (on applications) with a number of colleagues. Audience: Professors, students, researchers and other professionals in the fields of operations research, management science, industrial and applied mathematics, computer science, engineering, economics and the environmental sciences.
Using Ambient Noise and Sources of Opportunity to Estimate Environment Parameters and Improve Matched Field Source Detection and Localization
Author: Paul HurskyInverting for Source Location and Internal Wave Strength Using Long Range Ocean Acoustic Signals
Author: Kevin Donn HeaneyPublisher:
ISBN:
Category : Internal waves
Languages : en
Pages : 604
Book Description
Oceanic Abstracts
Author: Government Reports Announcements & Index
Author: Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 796
Book Description