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<html><head><title>FAST -- EOSAT FAST Format</title></head><body bgcolor="#ffffff"><h1>FAST -- EOSAT FAST Format</h1>Supported reading from FAST-L7A format (Landsat TM data) and EOSAT Fast FormatRev. C (IRS-1C/1D data). If you want to read other datasets in this format (SPOT),write to me (Andrey Kiselev, <a href=mailto:dron@ak4719.spb.edu>dron@ak4719.spb.edu</a>).You should share data samples with me.<p>Datasets in FAST format represented by several files: one or moreadministrative headers and one or more files with actual image data in rawformat. Administrative files contains different information about sceneparameters including filenames of images. You can read files withadministrative headers with any text viewer/editor, it is just plain ASCIItext.<p>This driver wants administrative file for input. Filenames of images will beextracted and data will be imported, every file will be interpreted as band.<p><h2>Data</h2><h3>FAST-L7A</h3>FAST-L7A consists form several files: big ones with image data and threesmall files with administrative information. You should give to driver oneof the administrative files:<p><ul><li>L7fppprrr_rrrYYYYMMDD_HPN.FST: panchromatic band header file with 1 band<li>L7fppprrr_rrrYYYYMMDD_HRF.FST: VNIR/ SWIR bands header file with 6 bands<li>L7fppprrr_rrrYYYYMMDD_HTM.FST: thermal bands header file with 2 bands</ul>All raw images corresponded to their administrative files will be importedas GDAL bands.<p>From the ``<a href=http://ltpwww.gsfc.nasa.gov/IAS/pdfs/DFCB_V5_B2_R4.pdf>Level 1 Product Output Files Data Format Control Book</a>'':<p><tt>The file naming convention for the FAST-L7A product files is<br>L7fppprrr_rrrYYYYMMDD_AAA.FST<br><br>where<br><br>L7 = Landsat 7 mission<br><br>f = ETM+ format (1 or 2) (data not pertaining to a specific format defaults to 1)<br><br>ppp = starting path of the product<br><br>rrr_rrr = starting and ending rows of the product<br><br>YYYYMMDD = acquisition date of the image<br><br>AAA = file type:<br>HPN = panchromatic band header file<br>HRF = VNIR/ SWIR bands header file<br>HTM = thermal bands header file<br>B10 = band 1<br>B20 = band 2<br>B30 = band 3<br>B40 = band 4<br>B50 = band 5<br>B61 = band 6L<br>B62 = band 6H<br>B70 = band 7<br>B80 = band 8<br><br>FST = FAST file extension<br></tt><p>So you should give to driver one of the <tt>L7fppprrr_rrrYYYYMMDD_HPN.FST</tt>, <tt>L7fppprrr_rrrYYYYMMDD_HRF.FST</tt> or<tt>L7fppprrr_rrrYYYYMMDD_HTM.FST</tt> files.<h3>IRS-1C/1D</h3>Fast Format REV. C does not contain band filenames in administrative header.So we should guess band filenames, because different data distributors nametheir files differently. Several naming schemes hardcoded in GDAL's FASTdriver. These are:<p><tt><header>.<ext><br><header>.1.<ext><br><header>.2.<ext><br>...<br></tt><p>or<p><tt><header>.<ext><br>band1.<ext><br>band2.<ext><br>...<br></tt><p>or<p><tt><header>.<ext><br>band1.dat<br>band2.dat<br>...<br></tt><p>or<p><tt><header>.<ext><br>imagery1.<ext><br>imagery2.<ext><br>...<br></tt><p>or<p><tt><header>.<ext><br>imagery1.dat<br>imagery2.dat<br>...<br></tt><p>in lower or upper case. Header file could be named arbitrarily. This shouldcover majority of distributors fantasy in naming files. But if you out ofluck and your datasets named differently you should rename them manuallybefore importing data with GDAL.<p><h2>Georeference</h2>All USGS projections should be supported (namely UTM, LCC, PS, PC, TM, OM, SOM).Contact me if you have troubles with proper projection extraction.<h2>Metadata</h2>Calibration coefficients for each band reported as metadata items.<ul> <li> <b>ACQUISITION_DATE</b>: First scene acquisition date in yyyyddmm format.<p> <li> <b>SATELLITE</b>: First scene satellite name.<p> <li> <b>SENSOR</b>: First scene sensor name.<p> <li> <b>BIASn</b>: Bias value for the channel <b>n</b>.<p> <li> <b>GAINn</b>: Gain value for the channel <b>n</b>.<p> </ul><h2>See Also:</h2><ul><li> Implemented as <tt>gdal/frmts/fast/fastdataset.cpp</tt>.<p><li> Landsat FAST L7A format description available from<a href=http://ltpwww.gsfc.nasa.gov/IAS/htmls/l7_review.html>http://ltpwww.gsfc.nasa.gov/IAS/htmls/l7_review.html</a>(see <a href=http://ltpwww.gsfc.nasa.gov/IAS/pdfs/DFCB_V5_B2_R4.pdf>ESDIS Level 1 Product Generation System (LPGS) Output Files DFCB, Vol. 5, Book 2</a>)<p><li> EOSAT Fast Format REV. C description available from<a href=http://www.euromap.de/doc_001.htm>http://www.euromap.de/doc_001.htm</a><p></body></html>⌨️ 快捷键说明
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