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<title>TRMM Satellite Validation Office Web Site</title>
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<h2><center>TRMM Radar Software Library</center></h2>
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<h2>Current RSL Version 1.43, released 4/30/2012</h2>
In support of the <a href="http://trmm-fc.gsfc.nasa.gov">Tropical Rainfall
Measuring Mission</a>'s (TRMM) <a href="http://trmm-fc.gsfc.nasa.gov/trmm_gv/index.html">Global
Validation Program</a>, the NASA TRMM Satellite Validation Office has developed a Radar Software
Library for working with the various input radar formats. This is an object-oriented
library written in C.
<p>This library is an object oriented programming environment for writing
software applicable to all RADAR data related to the <a href="http://trmm-fc.gsfc.nasa.gov/trmm_gv/index.html">TRMM
GV</a> effort. This library reads the WSR88D, Lassen, Sigmet, McGill, UF,
HDF, RAPIC, RADTEC and native RSL file formats. Additional functions are
provided to manipulate the RSL objects. Nearly all of the functions return
objects. When they don't, they usually perform actions like output, making
images, etc. The most general object in RSL is <b>Radar</b>. The structure
<b>Radar</b>
is the method used to define the ideal or universal radar representation
in RAM while keeping the natural resolution of the data unchanged. More
simply, <b>Radar</b> represents the super set of all radar file formats.
The <a href="RSL_structures.html">Radar structure</a> is hierarchically
defined such that it is composed of <b>Volumes</b>, each containing one
field type. <b>Volumes</b> are composed of <b>Sweeps</b>.
<b>Sweeps</b>
are composed of <b>Rays</b> and <b>Rays</b> contains a vector of the field
type. Some field types are Reflectivity(DZ), Velocity(VR), Spectrum Width(SW),
etc. There are approximately 20 field types. See the
<a href="users_guide.html">Users
Guide</a> for more information. Also, check out <a href="whats_new.html">What's
New</a>.<br>
Send questions or comments to help@radar.gsfc.nasa.gov.
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<center><table BORDER=2 WIDTH="400" >
<caption>
<h1>
Supported Radar Data Formats</h1>
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<td><b>Format Type</b></td>
<td><b>Input</b></td>
<td><b>Output</b></td>
</tr>
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<td>Lassen</td>
<td>Yes</td>
<td>No</td>
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<td>McGill</td>
<td>Yes</td>
<td>No</td>
</tr>
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<td>Sigmet</td>
<td>Yes</td>
<td>No</td>
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<td>WSR-88D</td>
<td>Yes</td>
<td>No</td>
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<td>RAPIC</td>
<td>Yes</td>
<td>No</td>
</tr>
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<td>UF - Universal Format</td>
<td>Yes</td>
<td>Yes</td>
</tr>
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<td>HDF - Hierarchical Data Format</td>
<td>Yes</td>
<td>Yes</td>
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<td>RADTEC</td>
<td>Yes</td>
<td>No</td>
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