THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
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Ocean wave height and spectrum >
Wave directional energy frequency spectrum


Measurement Definition*: 2-D parameter colloquially referred to as “wave spectrum”. Describes the wave energy travelling in each direction and frequency band (e.g., 24 distinct azimuth sectors each 15° wide, and 25 frequency bands) - Physical unit: [ m2×Hz-1×rad-1 ] - Accuracy unit: [ m2×Hz-1×rad-1 ].
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
SWIM
Surface Waves Investigation and Monitoring
Operational
Ku-band Real-aperture radar (RAR) system, multi-incindence beams(0-10°) and azimuth scanning. Measurement of 2D ocean waves spectrumn/a
* Description adapted from WMO.
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