ALOS Data Users Handbook

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Section 2 ALOS Missionphotovoltaic-sensors and synthetic aperture radar (SAR), information on vegetation and soil can beprovided as a combined unit. With regard to regions where topographical altitude data have been wellcompiled, it is now possible to make observations focusing on changes on the surface of the Earth. Thistype of data constitutes the spatial data basis on a global scale.• Support for sustainable development in various parts of the world through regional observations:Besides construction of the above spatial data basis, we intend to support preservation and managementof as well as sustainable development and use of the environment and resources on a regional level, byproviding various information on environmental and resources extracted from satellite images.• Monitoring large-scale disasters around the world:Unexpected disasters such as droughts, volcanic eruptions, and floods often fatally damage sustainableand stable regional development. Together with various satellite and disaster monitoring systemsalready available, we intend to collect and provide data relating to disasters.• Surveying of natural resources around the world:In addition to monitoring land and water resources, we intend to support regional development byproviding information that is useful for surveying mineral resources.• Development of technologies necessary for future Earth observations:ALOS is a quasi-only high-resolution satellite for collecting fundamentally complete information onthe entire Earth, and as such, there are many challenging research and development themes to follow inthe areas of sensor development technology as well as data-processing technology. As thesetechnologies will have big impacts on next-generation Earth observation technologies, ALOS is also animportant technological development project.2.2 ALOS Data Node ConceptThe ALOS Data Node Concept is a plan to rapidly use ALOS data on an international basis and to provideservices matching with the needs of various parts of the world, by dividing the globe into regions, wherebyeach region bears responsibility for processing, preserving, and distributing ALOS data by way of a data nodeto be established at each region.As the volume of data obtained through ALOS will be as large as 1 Tera Bytes or more a day, or over 20 times2-2
ALOS Data Users Handbookthe data obtained through conventional satellites, it is difficult for one organization or even for one countryalone to deal with such a huge volume. Meantime, because interest in using ALOS data is worldwide, theALOS Data Node Concept based on international task-sharing was conceived. The representative organizationsselected by individual regions, which are called ALOS Data Node Organizations, are responsible for providingappropriate user services to the ALOS data users in their respective areas, and thus they are obliged to establishALOS Data Nodes equipped with functions for ALOS data-processing, archiving, and distribution. ALOS DataNode Organizations are expected to cooperate with each other to promote the use of ALOS data, and toimprove supplies of services to users.Each Data Node Organization will receive level 0 data from JAXA based on an agreement with JAXA, andcreate products and distribute them to local users. Under the agreement with JAXA, it can also receive datathrough its X-band receiving stations (in this project, they are categorized as foreign receiving stations) and usethem.ALOS Data Node Concept is expected to contribute to the following.• Enhancement of ALOS data processing and archiving capabilities.• Promotion of scientific use as well as operational use of ALOS data.• Enlargement of international collaboration in the fields of validation and scientific research activities.• Improvement of services for potential users of ALOS data.At present, the following four Data Node Organizations including JAXA will share the entire Earth. In addition,Geo-Informatics and Space Technology Development Agency (GISTDA) of Thailand will join the frameworkof ALOS Data Node as an Asian Sub-node.• Data Node responsible for Asia: Japan Aerospace Exploration Agency (JAXA)• Data Node responsible for Europe and Africa: European Space Agency (ESA)• Data Node responsible for North/South America: National Oceanic and Atmospheric Administration(NOAA) and Alaska Satellite Facility (ASF)• Data Node responsible for Oceania: Geoscience Australia (GA)2.3 ALOS ProgramJAXA started a feasibility study of the ALOS satellite system as well as BBM development and testing ofcritical parts of sensor instruments in fiscal year 1994. During the period of fiscal 1996 and 1997, it conducted2-3
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ALOS Data Users Handbook8.5 Outline
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APPENDIXALOS Data Users Handbook
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Appendix 1 Acronyms and Abbreviatio
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ALOS Data Users HandbookAppendix 2
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