The Passive REflecTomeTry and dosimetrY (PRETTY) is a 3U CubeSat mission which was launched successfully in October 2023. It is the first CubeSat to exploit GNSS-R grazing altimetry technique at L5 frequency and using beam steering to measure sea state, ice and ocean currents at high precision. It also provides a characterization of the radiation dose environment.
PRETTY's second payload, SATDOS, is a compact reference dosimeter tailored for CubeSat applications. The platform is outfitted with dose integration enabling the evaluation of mission total ionizing dose (TID), as well as in-orbit single event effects (SEE), which will in fine support the reliability and sustainability of future missions on similar orbits.
The main mission objectives are:
Demonstrate the passive reflectometry payload focusing on grazing altimetry, applying cross-correlation of direct and reflected signals.
Measure and map the relative height of ice surfaces and sea ice in the polar regions.
Measure the relative height of the sea surface and map the eddy currents.
To assess the total radiation dose and the dose at different geographic regions of interest, providing a technology demonstration of a reference dosimeter system.
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