Environmental Slicer: Getting
Started
Introduction
The various modeling tools in the Acoustics Toolbox require input files describing the bathymetry,
oceanography, and bottom-type along a bearing line from the source. The Environmental Slicer
extracts this information from standard databases and sets up the propagation run. Thus it
automates the process of calculating the field on a slice.
This package was originally developed as part of SimplePlan and SimpleSide which are Matlab
GUIs for doing propagation modeling. In order to have some stand alone tools that could be
incorporated in other applications, the core components have been separated to form the Slicer
package.
Using the Slicer
The Slicer is called through a Matlab script which defines the vertical plane by the lat/long
coordinates of a beginning and end point. An example is given in the script run_slicer_bellhop.m
reproduced below. Working through the code we note that it starts with a ‘slicer_init’ call that
defines basic configuration parameters such as the command used to execute an acoustic model.
In addition, it reads in the bathymetry data which must be in the from of a standard ‘xyz’ file that
can be downloaded from the National Geophysical Data Center (Design-a-Grid).
To plot the bathymetry, we first use the routine LoadBathymetry.m followed by writebty3d.m. These
routines read the xyz format and write it out in a simpler rectangular grid format that is a standard
we use for our 3D software. The resulting bathymetry data can then be plotted using plotbty3d.m
to yield a plot as shown below. The Matlab functions are all included in the Acoustics Toolbox.
Heat, Light, and Sound Research, Inc.
Environmental Slicer! 1
BELLHOP水声信道仿真Matlab源码 （1860个子文件） 
._3DAtlantic 239B
