<p>The ALOS Ortho Rectified Image Product (ALOS-ORI) released by the Japan Aerospace Exploration Agency (JAXA) is open to the public.  The ALOS-ORI consists of the AVNIR-2 ORI product compiled from images acquired by the Advanced Land Observing Satellite “DAICHI” (ALOS) operated during the period from 2006 to 2011. <a href="https://nasa.gov">NASA</a>, in cooperation with JAXA, makes the dataset available through the ASF DAAC.</p><p> </p><div><div><h4>AVNIR-2 Sensor Summary</h4></div></div><div><div><div><table class="table table-striped table-hover"><tbody><tr><td>Observation Bands</td><td><strong>Band-1</strong> 0.42 - 0.50 µm<br><strong>Band-2</strong> 0.52 - 0.60 µm<br><strong>Band-3</strong> 0.61 - 0.69 µm<br><strong>Band-4</strong> 0.76 - 0.89 µm</td></tr><tr><td>Scanning Method</td><td>Push Broom</td></tr><tr><td>S/N</td><td>>200</td></tr><tr><td>MTF</td><td>>0.2</td></tr><tr><td>Spatial Resolution</td><td>10 (at Nadir)</td></tr><tr><td>Swath Width</td><td>70km (at Nadir)</td></tr></tbody></table></div></div></div><div><div><h2> </h2><h4>AVNIR-2 Ortho Rectified Image Product </h4><p>The AVNIR-2 ORI product is created from AVNIR-2 1B1 data after stereo matching with reference to the Panchromatic Remote-Sensing Instrument for Stereo Mapping (PRISM) ORI.   <a href="https://www.eorc.jaxa.jp/ALOS/en/aw3d30/index.htm">AW3D30</a> DSM data, which is created from a PRISM triplet image, is used for the orthorectification processing. If <a href="https://www.eorc.jaxa.jp/ALOS/en/aw3d30/index.htm">AW3D30</a> is missing,  SRTM (The Shuttle Radar Topography Mission) DSM data is used.</p><div>* Please refer to the HDR file in the data file to confirm which DSM is used in ORI product creation.</div><div> </div><p>The AVNIR-2 ORI product zip file contains the following files:</p><p><strong>Band-1</strong> 0.42 – 0.50 µm (8bit GeoTIFF)</p><p><strong>Band-2</strong> 0.52 – 0.60 µm (8bit GeoTIFF)</p><p><strong>Band-3</strong> 0.61 – 0.69 µm (8bit GeoTIFF)</p><p><strong>Band-4</strong> 0.76 – 0.89 µm (8bit GeoTIFF)</p><p><strong>Header file</strong> (ASCII text)</p><p> </p></div></div><div><div><table class="table table-striped table-hover"><tbody><tr><td>Platform</td><td>ALOS</td></tr><tr><td>Sensor</td><td>Advanced Visible and Near-Infrared Radiometer (AVNIR)-2</td></tr><tr><td>Observation Period</td><td>2006-2011</td></tr><tr><td>Spatial Coverage</td><td>Global</td></tr><tr><td>Cloud Cover</td><td>30% or less</td></tr><tr><td>Resolution</td><td>approximately 10m mesh</td></tr></tbody></table></div></div><p> </p><p>Please refer to <a href="https://asf.alaska.edu/wp-content/uploads/2019/02/avnir-2_ori_format_en.pdf">AVNIR-2 Ortho Rectified Image Product Format Description</a></p><p><a href="https://www.eorc.jaxa.jp/ALOS/en/dataset/ori_e.htm">JAXA webpage about ALOS Ortho Rectified Image Product</a></p><p><a href="https://www.eorc.jaxa.jp/ALOS/en/alos/a1_about_e.htm">More about ALOS from JAXA</a></p><p><a href="https://www.eorc.jaxa.jp/ALOS/en/alos/sensor/avnir2_e.htm">More about AVNIR-2 from JAXA</a></p>