Identifier: | SSM/I > Special Sensor Microwave/Imager |
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Docucomp UUID: | 8293FAD4B87075F2E040AC8C5AB4576F |
Instrument / Gear: | Instrument |
Instrument Type: | Imager |
Description: |
The instrument sweeps a 450 cone around the satellite velocity vector so that the Earth incidence angle is always 540. Data are recorded during the 102.40 of the cone when the antenna beam intercepts the Earth's surface. The channel footprint varies with channel energy, position in the scan, along scan or along track direction and altitude of the satellite. The 85 GHz footprint is the smallest with a 13 x 15 km and the 19 GHz footprint is the largest at 43 x 69 km. Because the 85 GHz footprint is so small, it is sampled twice as often, i.e., 128 times a scan. One data cycle consists of 4 85 GHz scans and 2 scans of the 19, 22 and 37 GHz channels. The complete cycle takes 28 seconds and it must be complete to process the data. |
Record Created: | January 30, 2018 5:14 PM UTC by michael.chang@noaa.gov |
Record Last Modified: | January 30, 2018 5:14 PM UTC by michael.chang@noaa.gov |