Modeling sound propagation for underwater test areas
AssigneeLockheed Martin Corporation
InventorsShawn P Londo, Matthew A Martz
Life of this patent
Estimating the term…
Abstract
A system and method for quickly modeling the ideal acoustic sound propagation in a body of water based on current SVP data and the position of the sound source, comprising the steps of: obtaining SVP data for the body of water; determining a depth of a sound source within the body of water; selecting a first ray angle originating from the sound source; calculating a first ray trace for the first ray angle using only the SVP data as environmental inputs; repeating the selecting and calculating steps for second-nth ray angles to calculate second-nth ray traces for the second-nth ray angles; and plotting the first-nth ray traces to create a ray trace plot for the body of water relative to the depth of the sound source.
Claims14
A method of modeling sound propagation in a body of water, comprising the steps of:
- obtaining SVP data for the body of water;
- determining a depth of a sound source within the body of water;
- selecting a first ray angle originating from the sound source;
- calculating a first ray trace for the first ray angle using only the SVP data as environmental inputs;
- repeating the selecting and calculating steps for second-nth ray angles to calculate second-nth ray traces for the second-nth ray angles;
- and
- plotting the first-nth ray traces to create a ray trace plot for the body of water relative to the depth of the sound source.
A method of confirming operability of a sonar receiver in an underwater testing environment, comprising the steps of:
- obtaining SVP data for the underwater testing environment;
- determining a depth of a sound source within the underwater testing environment;
- selecting a first ray angle originating from the sound source;
- calculating a first ray trace for the first ray angle using only the SVP data as environmental inputs;
- repeating the selecting and calculating steps for second-nth ray angles to calculate second-nth ray traces for the second-nth ray angles;
- plotting the first-nth ray traces to create a ray trace plot for the underwater testing environment relative to the depth of the sound source;
- and
- deploying underwater sound transmitting and receiving equipment at a location in the underwater testing environment that intersects at least one ray trace on the ray trace plot for the sound source;
- and confirming that the underwater sound transmitting and receiving equipment detects the sound source.
A system for confirming the operability of an underwater sound receiver in an underwater testing environment, the system comprising:
- means for obtaining SVP data for the underwater testing environment;
- means for determining a depth of a sound source within the underwater testing environment;
- means for selecting first-nth ray angles originating from the sound source;
- means for calculating first-nth ray traces for the first-nth ray angles using only the SVP data;
- means for plotting the first-nth ray traces to create a ray trace plot for the underwater testing environment relative to the depth of the sound source;
- and
- means for deploying the sonar receiver at a location in the underwater testing environment that intersects at least one ray trace on the ray trace plot for the sound source;
- and confirming that the sound transmitting and receiving equipment detects the sound source.
Dependencies are inferred from the claim text.