Concept
Advanced SCATterometer
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL1070/ | ||
|---|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | ||
| Alternative Labels | ASCAT | ||
| Definition | A C-band scatterometer designed to detect wind speed and vector over the sea surface, as well as large-scale soil moisture. Three sideways-looking antennas located on both sides of the instrument transmit microwave pulses toward the sea surface and measure the ground echoes returned back to the instrument. The backscattering properties of the signal detected are related to wind-generated sea-surface roughness, and can thus be used to infer wind speed and direction. The three antennas on each side are oriented at 45, 90 and 135 degrees azimuth respectively, and scan two 500 km swaths separated by a 700 km gap along-track. ASCAT operates at the C-band frequency of 5.233 GHz. The spatial resolution is 50 km (nominal) or 25 km (experimental). Flown on Metop-A, Metop-B, Metop-C. http://www.wmo-sat.info/oscar/instruments/view/47 | ||
| Date | 2016-11-15T15:28:05 | ||
| Identifier | SDN:L22::TOOL1070 | ||
| Note | accepted | ||
| Has Current Version | 1 | ||
| version | 1 | ||
| inScheme | http://vocab.nerc.ac.uk/scheme/SDNDEV/current/ | ||
| Broader | L05:305 |
scatterometers | Mapping: 877854 |
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