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H2020/HYPERNETS Project brochure

HYPSTAR User demo video

HYPSTAR® (HYperspectral Pointable System for Terrestrial and Aquatic Radiometry) is an autonomous hyperspectral radiometer system dedicated to surface reflectance validation of all optical Copernicus satellite data products. HYPSTAR takes radiance and irradiance measurements.

A HYPSTAR system comprises of an advanced hyperspectral VNIR spectrometer, an optional SWIR spectrometer, a simple RGB imaging camera alongside hyperspectral measurements, a relative calibration LED source, a pan-tilt mechanism, auxiliary sensors (pressure, humidity, temperature, rain, light, two external cameras), site-dependent accessories (designed mounting frames, carry cases, fixations, designed from commercial off-the-shelf equipment, etc.) and a standardized data stream for easy and systematic exploitation by downstream validation networks WATERHYPERNET and LANDHYPERNET.

Once operated on the fields, a HYPSTAR system is integrated into the WATERHYPERNET or LANDHYPERNET network dedicated to satellite validation, or may be operated independently. The networks automatically acquire measurements from the sites in near real-time, do magic, and provide the result data with associated uncertainties evaluated according to ISO/GUM. The uncertainty estimation closely follows the work of the FRM4SOC and FRM4VEG projects, where our HYPSTAR scientists are coordinators and partners.

The system is available in two versions: HYPSTAR-SR for deployments on water sites and HYPSTAR-XR for deployments on land sites. They have been rigorously tested in diverse and challenging conditions as regards application (water, land), platform (fixed structure, research crane), environment (cold/ hot, wet/ dry, calm/ windy, biofouling, etc.), and logistics (accessible/ remote, standalone/ heavily instrument site, well-protected/ vulnerable to humans, etc.) during the H2020/HYPERNETS project.

12 HYPSTAR-SR and 12 HYPSTAR-XR prototypes have been deployed at locations such as Acqua Alta Oceanographic Tower (Italy), Río de la Plata (Argentina), and Wytham Woods (The UK), with plans for further testing and deployment in 2023.

Our partners are constantly updating these deployments on Twitter @Hypernets_H2020, so make sure to follow us for the latest news.

The HYPSTAR systems are commercialized by the RSware Limited company based in Tartu, Estonia. For more information please contact: rsware.ou[at]gmail.com.

 

HYPSTAR-SR

The HYPSTAR-SR prototype tested by our partner Laboratoire d'Océanographie de Villefranche, Sorbonne University on the field at Étang de Berre, 2021

 

The HYPSTAR-SR (Standard Range) system is designed for radiometric validation of "water colour" satellites. The systems have been tested on water sites with diverse conditions (offshore, coastal and inland water) within the H2020/HYPERNETS project.

Data are provided from sites to the WATERHYPERNET network daily, processed, and distributed with associated uncertainties evaluated according to ISO/GUM.

HYPSTAR-SR is fully characterized and calibrated from factory.

Technical specifications:

Parameter HYPSTAR-SR radiometer
Measured quantity Radiance and irradiance (multiplexed)
Field of view 2° (radiance), 180° (irradiance)
Detector array 2048 px Si
Spectral range 380 … 1020 nm
Spectral sampling interval 0.5 nm
Spectral resolution 3 nm
ADC resolution 16 bit
Integration time 1...65535 ms
Shutter Internal
Target camera 5 Mpx, RGB
Communication interface RS485, half duplex, 115.2 … 8000 kbps
Housing material Anodised marine grade aluminium
Dimensions (DxL) ⌀110.3 x 267 mm
Weight 1.5 kg
Power supply 8 … 18 V DC, 0.5 A
Environmental protection IP67
Operating temperature -25 … +45 °C
Storage temperature -35 … +70 °C

HYPSTAR-XR

hypstar-2

 

The HYPSTAR-XR system (eXtended Range) is designed for radiometric validation of "land" satellites. The systems have been tested in deserts, snow/ice fields, and vegetated lands (e.g. woodland, agricultural, tropical forests, mixed surfaces) within the H2020/HYPERNETS project.

Data are provided from sites to the LANDHYPERNET network daily, processed, and distributed with associated uncertainties evaluated according to ISO/GUM.

The system is fully characterized and calibrated from factory.

Technical specifications:

Parameter HYPSTAR-XR radiometer
Measured quantity Radiance and irradiance (multiplexed)
Field of view 5° (radiance), 180° (irradiance)
Detector array 2048 px Si, 256 px InGaAs
Spectral range 380 … 1700 nm
Spectral sampling interval 0.5 nm (VNIR), 3 nm (SWIR)
Spectral resolution 3 nm (VNIR), 10 nm (SWIR)
ADC resolution 16 bit
Integration time 1...65535 ms
Shutter Internal
Target camera 5 Mpx, RGB
Communication interface RS485, half duplex, 115.2 … 8000 kbps
Housing material Anodised marine grade aluminium
Dimensions (DxL) ⌀110.3 x 434 mm
Weight 3 kg
Power supply 8 … 18 V DC, 2 A
Environmental protection IP67
Operating temperature -25 … +45 °C
Storage temperature -35 … +70 °C

Our startup team

 

Joel Kuusk
Associate Professor, Tartu Observatory
 
Kaspars Laizans
Senior engineer, Tartu Observatory
 
Ken Flight
Mechatronics engineer, Tartu Observatory
 
Kim Duong
Business and innovation manager, Tartu Observatory

 

Our partners

 

 

Last updated: 26-Jan-2023

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Development of the HYPSTAR radiometer was funded by the European Union’s Horizon 2020 research and innovation program under Grant agreement No. 775983 ("HYPERNETS project").