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<section id="alos-pre-process">
<span id="index-0"></span><h1>ALOS_pre_process<a class="headerlink" href="#alos-pre-process" title="Permalink to this headline"></a></h1>
<section id="synopsis">
<h2>Synopsis<a class="headerlink" href="#synopsis" title="Permalink to this headline"></a></h2>
<p><strong>ALOS_pre_process</strong> <em>imagefile</em> <em>LEDfile</em> [-near near_range] [-radius RE] [-swap] [-V] [-debug] [-quiet] …</p>
</section>
<section id="description">
<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline"></a></h2>
<p><strong>ALOS_pre_process</strong> creates .raw format data and writes out parameters in .PRM format</p>
</section>
<section id="required-arguments">
<h2>Required Arguments<a class="headerlink" href="#required-arguments" title="Permalink to this headline"></a></h2>
<p><em>imagefile</em></p>
<blockquote>
<div><p>ALOS Level 1.0 complex file (CEOS format):</p>
</div></blockquote>
<p><em>LEDfile</em></p>
<blockquote>
<div><p>ALOS Level 1.0 LED file (CEOS leaderfile format):</p>
</div></blockquote>
</section>
<section id="optional-arguments">
<h2>Optional Arguments<a class="headerlink" href="#optional-arguments" title="Permalink to this headline"></a></h2>
<p><strong>-near</strong> <em>near_range</em></p>
<blockquote>
<div><p>Specify the <em>near_range</em> (m)</p>
</div></blockquote>
<p><strong>-radius</strong> <em>RE</em></p>
<blockquote>
<div><p>Specify the local earth radius <em>RE</em> (m)</p>
</div></blockquote>
<p><strong>-swap</strong></p>
<blockquote>
<div><p>Do byte-swap (should be automatic)</p>
</div></blockquote>
<p><strong>-nodopp</strong></p>
<blockquote>
<div><p>Does not calculate doppler (sets fd1 to zero!)</p>
</div></blockquote>
<p><strong>-npatch</strong></p>
<blockquote>
<div><p>Set the number of patches</p>
</div></blockquote>
<p><strong>-fd1</strong> <em>DOPP</em></p>
<blockquote>
<div><p>Sets doppler centroid [fd1] to <em>DOPP</em></p>
</div></blockquote>
<p><strong>-quad</strong></p>
<blockquote>
<div><p>Adjust parameters for quad pol mod (PRF/2)</p>
</div></blockquote>
<p><strong>-ALOSE</strong></p>
<blockquote>
<div><p>Use ERSDAC format</p>
</div></blockquote>
<p><strong>-ALOS</strong></p>
<blockquote>
<div><p>Use AUIG format (default)</p>
</div></blockquote>
<p><strong>-LED</strong></p>
<blockquote>
<div><p>Write GMTSAR generic LED format output and update PRM (default)</p>
</div></blockquote>
<p><strong>-noLED</strong></p>
<blockquote>
<div><p>Do not write GMTSAR generic LED format output</p>
</div></blockquote>
<p><strong>-roi</strong></p>
<blockquote>
<div><p>Write roi_pac format output</p>
</div></blockquote>
<p><strong>-V</strong></p>
<blockquote>
<div><p>Verbose write information)</p>
</div></blockquote>
<p><strong>-debug</strong></p>
<blockquote>
<div><p>Write even more information</p>
</div></blockquote>
<p><strong>-quiet</strong></p>
<blockquote>
<div><p>Don’t write any information</p>
</div></blockquote>
<p><strong>-force_slope</strong> <em>chirp_slope</em></p>
<blockquote>
<div><p>Force a value for the <em>chirp_slope</em></p>
</div></blockquote>
<p><strong>-chirp_ext</strong> <em>chirp_ext</em></p>
<blockquote>
<div><p>Force a value for the chirp extension <em>chirp_ext</em> (integer)</p>
</div></blockquote>
<p><strong>-tbias</strong> <em>tbias</em></p>
<blockquote>
<div><p>Correct the clock bias <em>tbias</em> (positive value means plus)</p>
</div></blockquote>
</section>
<section id="example">
<h2>Example<a class="headerlink" href="#example" title="Permalink to this headline"></a></h2>
<blockquote>
<div><div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ALOS_pre_process</span> <span class="n">IMG</span><span class="o">-</span><span class="n">HH</span><span class="o">-</span><span class="n">ALPSRP050420840</span><span class="o">-</span><span class="n">H1</span><span class="mf">.0</span><span class="n">__A</span> <span class="n">LED</span><span class="o">-</span><span class="n">ALPSRP050420840</span><span class="o">-</span><span class="n">H1</span><span class="mf">.0</span><span class="n">__A</span>
</pre></div>
</div>
</div></blockquote>
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