ABSTRACTS

Oral Session 8 | Wednesday, October 5, 14:00–14:20 | Abstract 528

HYPSTAR-SR: A novel hyperspectral radiometer system

A new autonomous hyperspectral radiometer system (HYPSTAR-SR) was developed in the H2020 project HYPERNETS to equip the WATERHYPERNET network–an upgrade of the AERONET-OC network for validation of satellite data over water. HYPSTAR-SR measures radiance and irradiance within the spectral range of (380 … 1020) nm. Once operated on a site, HYPSTAR-SR can be integrated into the WATERHYPERNET network or operated independently. The system automatically takes measurements in near real-time, and provides output data with associated uncertainties evaluated according to ISO/GUM. The uncertainty estimation closely follows the work of the ESA’s FRM4SOC project. A HYPSTAR-SR system includes a multi-head multiplexed hyperspectral VNIR radiometer, a pan-tilt mechanism under software control to allow full zenith- and azimuth-pointing of the radiometer, an RGB imaging camera, a relative calibration LED source (currently under development), auxiliary sensors, site-dependent accessories, and a standardized data stream for easy and systematic exploitation. In the HYPERNETS project, HYPSTAR-SR has been deployed at 12 sites covering diverse water (inland/ coastal/ turbid/ etc.), climatic (cold/ hot, dry/ wet, biofouling, etc.) and logistic (accessible/ remote, EU/ non-EU) conditions. HYPSTAR-SR will be commercialized in early 2023. All systems will be fully characterized and calibrated from factory. We present the characteristics and first measurement results of HYPSTAR-SR.

Kim Duong, Tartu Observatory, University of Tartu

Joel Kuusk, Tartu Observatory, University of Tartu

Kaspars Laizans, Tartu Observatory, University of Tartu

Kenneth Erle Flight, Tartu Observatory, University of Tartu