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It outlines the instrument’s spectral bands, spatial resolutions, and acquisition coverage area, then explains the ASTER Final Processing Campaign and its aim to create static Version 4 collections of selected products. The guide further covers data products, file naming, processing levels, algorithms, quality, improvements, known issues, data access, and contact information.",{"@graph":69,"@context":121},[70,84,104],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/advanced-spaceborne-thermal-emission-and-reflection-radiometer-aster-version-4-product-user-guide-v4-user-guide/565657/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":98,"encodingFormat":97,"isAccessibleForFree":99,"interactionStatistic":100},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/advanced-spaceborne-thermal-emission-and-reflection-radiometer-aster-version-4-product-user-guide-v4-user-guide/565657.png","ImageObject",300,407,{"name":92,"@type":93},"Jordan Avery","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-13",true,{"@type":101,"interactionType":102,"userInteractionCount":4},"InteractionCounter",{"@type":103},"ViewAction",{"@type":105,"mainEntity":106},"FAQPage",[107,113,117],{"name":108,"@type":109,"acceptedAnswer":110},"What is ASTER and what does it measure?","Question",{"text":111,"@type":112},"ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) is a multispectral imager launched on NASA’s Terra platform that observes visible to thermal infrared wavelengths using 14 spectral bands.","Answer",{"name":114,"@type":109,"acceptedAnswer":115},"What is the goal of the ASTER Final Processing Campaign for Version 4?",{"text":116,"@type":112},"The campaign reprocesses the ASTER archive using improved atmospheric inputs for Level 2 product generation and updated GCPs and DEMs, producing static Version 4 collections of selected ASTER products for the full archive.",{"name":118,"@type":109,"acceptedAnswer":119},"Which parts of the guide explain how to find and use the data?",{"text":120,"@type":112},"The guide covers data products, file naming conventions, processing levels, algorithm descriptions, quality and known issues, plus data access and contact information for additional support.","https://schema.org",{"og:url":83,"og:type":123,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":125,"canonical":83},"index,follow",{"doc_id":127,"site_id":62},565657,1791856891,{"code":4,"msg":5,"data":130},{"doc_id":127,"user_id":131,"nickname":92,"user_avatar":132,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":133,"file_id":134,"file_url":135,"file_type":136,"file_size":137,"view_count":4,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":138,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":128,"read_time":143},1099523882367,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Version 4 Product User Guide  \nApril 2025  \nLP DAAC Project Scientist: Cole Krehbiel  \nWritten by Karen Yuan1 and Cole Krehbiel2 Reviewed by Mike Abrams3  \n1KBR, Inc., contractor to the U. S. Geological Survey (USGS), Earth Resources Observation and Science (EROS) Center, Sioux Falls, South Dakota, USA. Work performed under USGS contract 140G0121D0001 for LP DAAC4.  \n2USGS EROS, Sioux Falls, South Dakota, USA  \n3Jet Propulsion Laboratory/California Institute of Technology, Pasadena, CA  \n4LP DAAC work performed under NASA contract 80GSFC24TA009  \nTable of Contents  \n1. Introduction………………………………………………………………………………………………………………………………..5  \n2. Data Products………………………………….……………………………………………………………………………………….…6  \n3. Data Characteristics…………………………………………………………………………………………………………………….7  \n4. File Naming Conventions………………………………………..……………………………………………………………..……8  \n5. ASTER Processing Levels ………………………………………………………………………………………………..………...10  \n6. Algorithm Description……………………………………………………………………………..…………………….………….10  \n7. Quality……………………………………………………………………………………………………………………………………...11  \n8. Improvements…………………………………………………………………………………………………………………………..11  \n9. Known Issues…………………………………………………………………………………………………………………………….13  \n10. Data Access……………………………………………………………………………………………………………………………….13  \n11. Contact Information………………………………………………………………………………………………………………….13  \nVersion Log History  \n\n| Revision | Date Updated | Prepared By | Description |\n| --- | --- | --- | --- |\n| Draft | February 2025 | Karen Yuan | Draft ofASTER\u003Cbr>Version 4 User Guide |\n| Version 1.0 | April 2025 | Karen Yuan | Added QA and additional Metadata Information |\n|  |  |  |  |\n|  |  |  |  |\n\nContacts  \nUsers of this guide looking for additional information about ASTER Version 4 may contact the following:  \nKaren Yuan  \nKBR, Inc., contractor to the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center 47914 252nd Street, Sioux Falls, SD 57198  \n[Email:](Email: yyuan@contractor.usgs.gov)[ ](Email: yyuan@contractor.usgs.gov)[yyuan@contractor.usgs.gov](Email: yyuan@contractor.usgs.gov)  \nCole Krehbiel  \nUSGS EROS  \n47914 252nd Street, Sioux Falls, SD 57198  \nEmail: [ckrehbiel@usgs.gov](ckrehbiel@usgs.gov)  \nPhone: 605-594-2682  \nBjorn Eng  \nJet Propulsion Laboratory/California Institute of Technology  \n4800 Oak Grove Drive Pasadena, CA 91109 [Email:](Email: bjorn.t.eng@jpl.nasa.gov)[ ](Email: bjorn.t.eng@jpl.nasa.gov)[bjorn.t.eng@jpl.nasa.gov](Email: bjorn.t.eng@jpl.nasa.gov)  \n1. Introduction  \n1.1 ASTER Overview  \nThe Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is amultispectral imager that was launched on board NASA’s Earth Observing System (EOS) Terra Platform on December 18, 1999, and has been observing and collecting Earth observations for over 25 years. ASTER covers a wide spectral region from visible to thermal infrared, including 14 spectral bands with high spatial, spectral, and radiometric resolution. The spectral band passes are shown in Table 1.1. The wide spectral region is covered by three telescopes,(1) three Visible and Near Infrared Radiometer (VNIR) bands with a spatial resolution of 15 meters (m),(2) six Short Wave Infrared Radiometer (SWIR) bands with a spatial resolution of 30 m and (3) five Thermal Infrared Radiometer (TIR) bands with a spatial resolution of 90 m. Each of the three subsystems has a nadir-pointing telescope, and the VNIR subsystem has an additional backward pointing telescope that is used to see backward in the near infrared spectral band (band 3B) to obtain stereo coverage. Each ASTER acquisition (scene) covers an area of 60 x 60 km. ASTER is a partnership between NASA, Japan's Ministry of Economy, Trade and Industry (METI), the National Institute of Advanced Industrial Science and Technology (AIST) in Japan, and Japan Space Systems (J-spacesystems) .  \nThe Land Processes Distributed Active Archive Center (LP DAAC) ingests, archive","cbCaiaj6AMQ0tRMp","https://ap.wps.com/l/cbCaiaj6AMQ0tRMp","pdf",440980,13,"English","# 1. Introduction\n## 1.1 ASTER Overview\n## 1.2 ASTER Final Processing Campaign Overview\n# 2. Data Products\n# 3. Data Characteristics\n# 4. File Naming Conventions\n# 5. ASTER Processing Levels\n# 6. Algorithm Description\n# 7. Quality\n# 8. Improvements\n# 9. Known Issues\n# 10. Data Access\n# 11. Contact Information","[{\"question\":\"What is ASTER and what does it measure?\",\"answer\":\"ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) is a multispectral imager launched on NASA’s Terra platform that observes visible to thermal infrared wavelengths using 14 spectral bands.\"},{\"question\":\"What is the goal of the ASTER Final Processing Campaign for Version 4?\",\"answer\":\"The campaign reprocesses the ASTER archive using improved atmospheric inputs for Level 2 product generation and updated GCPs and DEMs, producing static Version 4 collections of selected ASTER products for the full archive.\"},{\"question\":\"Which parts of the guide explain how to find and use the data?\",\"answer\":\"The guide covers data products, file naming conventions, processing levels, algorithm descriptions, quality and known issues, plus data access and contact information for additional support.\"}]","Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Version 4 Product User Guide - V4 User Guide | PDF",33]