Full Field Inversion Methods in Ocean and Seismo-Acoustics

1. Front Matter

   Pages i-xvi

   PDF

2. Speed and Accuracy of Replica Field Computations

   1. Front Matter

      Pages 1-2

      PDF

   2. Model Validation for Direct and Inverse Problems

      • M. B. Porter

      Pages 3-8

   3. Parallelism in Ocean Acoustic Computations

      • Peter C. Mignerey

      Pages 9-14

   4. Propagation and Inversion in Complex Ocean Environments

      • Michael D. Collins, W. A. Kuperman, William L. Siegmann

      Pages 15-20

   5. Fast and Accurate Finite Element Methods for the Numerical Prediction of the Acoustic Field

      • N. A. Kampanis

      Pages 21-26

   6. Direct Wave Propagation in the Frequency Domain via the Dirichlet-to-Neumann Operator Symbol

      • L. Fishman, M. D. Collins

      Pages 27-32

   7. Efficient Acoustic Field Computation for Estimating Geoacoustic Bottom Parameters Using Matched-Field Inversion

      • N. G. Henson, D. E. Hannay, P. Scrimger, S. E. Dosso

      Pages 33-38

   8. Weakly Divergent Bundles of Rays and Their Possible Use in Inverse Methods of Ocean Acoustics

      • L. M. Brekhovskikh, V. V. Goncharov, V. M. Kurtepov

      Pages 39-44

   9. Parallel Implementation of a 3-D Range-Dependent Ray Model for Replica Field Generation

      • Lewis Dozier, Pierre Lallement

      Pages 45-50

   10. Some Improvement of the Shortest Path Ray Tracing Algorithm

       • Zoltán Wéber

       Pages 51-56

   11. A Three-Dimensional, Broadband, Coupled Normal-Mode Sound Propagation Modeling Approach

       • Ching-Sang Chiu, James H. Miller, Warren W. Denner, James F. Lynch

       Pages 57-62

   12. Development of an Acoustic Field Predictor in a Three Dimensional Oceanic Environment

       • F. Sturm, M. C. Pelissier, D. Fattaccioli

       Pages 63-68

   13. Three-Dimensional Sound Propagation in an Ocean Overlying an Elastic Bottom

       • Gregory J. Orris, Michael D. Collins, Grant B. Deane, Michael B. Porter

       Pages 69-75

3. Signal Processing and Global Search Strategies

   1. Front Matter

      Pages 77-77

      PDF

   2. Parameter Estimation Theory Bounds and the Accuracy of Full Field Inversions

      • Arthur B. Baggeroer, Henrik Schmidt

      Pages 79-84

   3. Physics-Imposed Resolution and Robustness Issues in Seismo-Acoustic Parameter Inversion

      • Henrik Schmidt, Arthur B. Baggeroer

      Pages 85-90

   4. Statistical Approach to Ocean Acoustic Tomography, Cramer-Rao Bounds for Accuracy of Sound-Speed Field Reconstruction

      • V. V. Borodin, G. R. Minasian

      Pages 91-95

   5. Statistical Formulation of Ray, Interference and Mode Acoustic Tomography and Its Potential Accuracy Evaluation

      • V. V. Borodin, G. R. Minasian

      Pages 97-101

   6. Precision and Sensitivity of Coherent and Incoherent Inversion Methods: A Comparative Study

      • M. João Rendas, Georges Bienvenu, José M. F. Moura

      Pages 103-108

Recent advances in the power of inversion methods, the accuracy of acoustic field prediction codes, and the speed of digital computers have made the full field inversion of ocean and seismic parameters on a large scale a practical possibility. These methods exploit amplitude and phase information detected on hydrophone/geophone arrays, thereby extending traditional inversion schemes based on time of flight measurements. Full field inversion methods provide environmental information by minimising the mismatch between measured and predicted acoustic fields through a global search of possible environmental parameters.
Full Field Inversion Methods in Ocean and Seismo-Acoustics is the formal record of a conference held in Italy in June 1994, sponsored by NATO SACLANT Undersea Research Centre. It includes papers by NATO specialists and others. Topics covered include:
· speed and accuracy of acoustic field prediction codes
· signal processing strategies
· global inversion algorithms
· search spaces of environmental parameters
· environmental stochastic limitations
· special purpose computer architectures
· measurement geometries
· source and receiving sensor technologies.

• Inversion
• Ocean
• Phase
• Scale
• acoustics
• information
• seismic
• signal processing
• climate change

• SACLANT Undersea Research Centre, La Spezia, Italy

  O. Diachok, P. Gerstoft

• University of Genova, Italy

  A. Caiti

• Massachusetts Institute of Technology, Cambridge, USA

  H. Schmidt

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