Wave Directional Energy Frequency Spectrum
Measurement Instruments
Measurements > Ocean > 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 ].
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
| SWIM | Operational | Ku-band Real-aperture radar (RAR) system, multi-incindence beams(0-10°) and azimuth scanning. Measurement of 2D ocean waves spectrum | n/a |  |