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Outline: Method of Maximum Likelihood, estimating variability of estimates by the bootstrap. Decision theory, Bayesian and minimax inference. Testing hypotheses, Neyman-Pearson lemma, one-and two-sided most powerful tests. Linear least squares, applications to functional estimation. Empirical cumulative distribution function. Non-parametric density(More)
Seaweb networks use digital signal processor (DSP)-based telesonar underwater acoustic modems to interconnect fixed and mobile nodes. Backbone nodes are autonomous, stationary sensors and telesonar repeaters. Peripheral nodes include unmanned undersea vehicles (UUVs) and specialized devices such as low-frequency sonar projectors. Gateway nodes provide(More)
This talk traces the development of Seaweb through-water networking from 1995 to the present day. Encompassing the physical, link, network, transport, and session layers of the open-systems interconnect (ISO/OSI) stack, Seaweb technology enables undersea sensor networks, autonomous/unmanned underwater vehicle (AUV/UUV) communication & navigation, and(More)
Seaweb is an underwater acoustic wide-area network connecting autonomous, distributed nodes. This paper presents a network discovery process that enables such a field of spontaneously deployed, ad hoc nodes to auto-configure network routes. The process is initialized as nodes in the network are discovered, link distances measured, and optimal routes chosen(More)
Results are reported from field tests of networked acoustic modems used for wireless real-time delivery of oceanographic measurements from a distributed array of subsurface instruments in coastal waters. The network demonstrated consists of sensor nodes, repeater nodes, gateway nodes, and a shore-based control center. Sensors are oceanographic instruments(More)
Recent progress in the development of a physics-based numerical propagation model for the virtual transmission of acoustic communication signals in shallow water is presented. The ultimate objective is to provide for the prediction of the output of the quadrature detector (QD, an analog of the discrete Fourier transform) in a time-variant, doubly(More)
Our goal is to accomplish data telemetry and remote control for a set of widely spaced oceanographic sensors by using through-water acoustic signaling (telesonar) to form an undersea wireless network (Seaweb). Spatial sampling of ocean frontal features on the inner continental shelf requires sensor distribution over roughly a 10-km by 10-km measurement(More)
Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this(More)
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