Asw passive sonar search planning consists of two major areas: employment of the searching platform (course, speed, depth, and track plan) and sonar system lineup selections. these two areas are interdependent, but the degree and nature of the interaction is not well understood. current sonar lineup… More

A family of models will be developed to study the dynamics of fluid mixing in two-dimensional viscous, incompressible flows. the simplest model and its generalizations are based on the lagrangian formulation of fluid motion and willallow study of the dynamics of mixing as a function of the reynolds… More

The coast guard used velocity fields from various ocean circulation models to provide input into trajectory models which are used in search planning to determine search area movement. statistical techniques (called objective analysis), which are applications of the gauss-markov theorem, are used by… More

Interpretation of observed phenomena from time series is often complicated by measured quantities being only indirect indicators of a system's state. Information about a system may be filtered by properties of the transmission medium, or by the manner inwhich the information is collected. Multiple… More

People who work in the marine sciences field often need to analyze the transmission of sound through the ocean. Today, there are more than 60 different propagation loss models available; no single model is the best in all cases. Choosing the appropriate model, as well as the necessary input data… More

The goal of the Phase II project is to develop a prototype of the Marine Acoustic Propagation System (MAPS).  MAPS is a computer system designed in a client-server archi9tecture that provides NOAA marine scientists, who do not have an extensive background in underwater acoustics, with a tool… More

We propose to adapt angle-only passive ranging methods developed for use by the submarine force to the problem of range estimation for missiles and rockets. Three particular methods will be examined: parallax or triangulation ranging; tracker/filter algorithms; and the relationship between range… More

We propose to adapt angle-only passive ranging methods developed for submarine warfare to the problem of range estimation for missiles using current electro-optical sensor systems in order to provide fire control quality tracking at or near threat burnout to support early intercept. Three methods… More

The Undersea Warfare Decision Support System (USW-DSS), currently employed by Carrier Strike Groups for integrated command and control and anti-submarine warfare (ASW), uses the Operational Route Planner (ORP) that incorporates a genetic algorithm to define optimal ASW search tracks. This capability… More

Use of data from multiple sensors provides the opportunity for improved ballistic missile defense (BMD) search and tracking. Algorithms for combining multi-sensor data are required. BMD sensor data fusion is a challenging problem because of incompatibility in coordinate systems for different… More

Use of data from multiple sensors provides the opportunity for improved ballistic missile defense search and tracking. Algorithms for combining multi-sensor data are required. Ballistic missile defense sensor data fusion is a challenging problem because of incompatibility in coordinate systems for… More