| Autor: |
Ralph K. Anderson, P. Krishna Rao, Paul E. Lehr, Susan J. Holmes, Jay S. Winston |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Weather Satellites: Systems, Data, and Environmental Applications ISBN: 9781944970161 |
| DOI: |
10.1007/978-1-944970-16-1_17 |
| Popis: |
Data received from a satellite require special handling before they can be used. Data from differennt instruments are sampled at different rates, multiplexed (combined) into a single bit-stream, and recorded or transmitted to a receiving station in a compact format. Such unprocessed “raw” data must be transformed into a more manageable and useful format with the addition of important ancillary data, such as calibration and Earth location parameters. The result is known as “conditioned” data. This transformation from raw to conditioned data, which is called “reprocessing,” includes the following ordered steps: Data broadcast from the satellite are “ingested” or received into the preprocessing computer. Different types of data are separated into individual data sets according to the originating satellite and instrument. Instrument data are “calibrated” or described in forms that can be related to physical quantities. “Earth location” information is added so that each measurement can be directly related to a location on the Earth. The performance of the instrument annd datatransmission are regularly monitored. The final conditioned data are stored in a data base accessible by the product processing programs and in a format compatible for archiving. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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