A Caltech Library Service

Range dependent signals and maximum entropy methods for underwater acoustic tomography


Kendall, Elizabeth Ann (1985) Range dependent signals and maximum entropy methods for underwater acoustic tomography. Dissertation (Ph.D.), California Institute of Technology.


NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document.

A new method for simulating underwater acoustic signals in range dependent environments is presented, and the approach utilizes Maslov asymptotic theory as developed by C. H. Chapman for synthetic seismograms. The simulated range dependent signals are then used in active underwater acoustic tomography exercises, where changes in observed acoustic transmissions are inverted to obtain information about ocean sound velocity structure. The inversions are performed with both the generalized inverse and the maximum entropy inverse, and a new numerical method for finding the maximum entropy inverse with noisy data is presented. The numerical technique follows the [...] statistic approach proposed by Bryan and Skilling.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Major Option:Mechanical Engineering
Thesis Availability:Restricted to Caltech community only
Thesis Committee:
  • Caughey, Thomas Kirk (chair)
Defense Date:24 January 1985
Record Number:CaltechETD:etd-04092008-080843
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1319
Deposited By: Imported from ETD-db
Deposited On:09 Apr 2008
Last Modified:26 Dec 2012 02:37

Thesis Files

[img] PDF (Kendall_ea_1985.pdf) - Final Version
Restricted to Caltech community only
See Usage Policy.


Repository Staff Only: item control page