Microwave radar system for wind stress and other marine applications
The system is composed by:
- Monostatic fully-coherent pulse-doppler radar in Ku-band (14.5 GHz). It measures the radar backscatter and the doppler frequency. Developed by ITS Elettronica S.R.L. and CNR.
- portable platform and biaxial aiming motor. Allows the pointing of radar device in scatterometer configuration (20-60 degrees elevation) and altimeter (0 degree elevation).
- ultrasonic anemometer GILL R3-100 (100 Hz). Supplies UVW wind measurements at high frequency and automatically drives the pointing of the radar up-wind.
- psychrometer and sea temperature probe
STUDY OF THE AIR-SEA INTERFACE:. The amplitude and the doppler frequency of the backscatter are modulated by the interaction of the short waves generated by the wind with the long sea waves, and by the variation in range and slope of the latter. The function governing these modulations is the Modulation Transfer Function (MTF), which is characteristic of the state of the MABL.
SNOW MELTING AND FREEZING CYCLE: The radar makes simultaneous active and passive microwave measurements to investigate the melting-freezing snow cycle.
ALTIMETER MEASUREMENTS: The radar follows the surface movements of the long sea waves, giving information on sea surface height and slope changes. These measurements can be used to determine the statistics of the long sea waves spectrum.