8 April 2003 Operation of ASTER and its data production
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Abstract
ASTER (Advanced Thermal Emission and Reflection Radiometer) was launched on December 19th, 1999, from Vandenberg, California, USA, and has been circulating the Earth on a NASA platform called Terra. After the Initial Checkout Phase, ASTER started the normal operation on September 20th, 2000, and ERSDAC started ASTER data distribution on December 1st, 2000. Data Acquisition by ASTER is quite stable at a daily rate of about 600 scenes. The resulting total number of acquired scenes is 439 thousands scenes as of June 28th, 2002. This number is equivalent to more than ten times the number of scenes covering all the land areas on the earth. ASTER GDS takes an operational sequence in which the observation schedule is updated by using Cloud Prediction Data immediately before the observation. Therefore, this scheduling operation allows us to acquire the data with less cloud cover. All the acquired data are downloaded at NASA and are shipped to ERSDAC via physical media and, for some small number, via network. All the acquired data are processed to Level 1A at ASTER GDS first, and the total number as of June 28th, 2002, is about 352 thousands scenes. Next, Level 1B processing is performed for the data requested by users and the data with less than 20% cloud cover. The total number of Level 1B data is about 80 thousands scenes as of June 28th, 2002.
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Hiroshi Watanabe, Takasi Inada, Kannari Yoshiaki, Akira Miura, "Operation of ASTER and its data production", Proc. SPIE 4881, Sensors, Systems, and Next-Generation Satellites VI, (8 April 2003); doi: 10.1117/12.463058; https://doi.org/10.1117/12.463058
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KEYWORDS
Clouds

Data acquisition

Data archive systems

Data centers

Data modeling

Data processing

Calibration

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